Surgery
Surgery
Y
Uthuman
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EAR, NOSE AND THROAT DISORDERS
Definition of Terms as used in Ear Anatomy
 Acoustic
This is pertaining to sound or the sense of hearing
 Cerumen
This is a yellow or brown, wax like secretion found in the
external auditory canal
 Cochlea
                                3
This is the winding, snail-shaped bony tube that forms a portion
of the inner ear and contains the organ of Corti which is the
transducer for hearing
 Cochlear (acoustic) nerve
This is the division of the eighth cranial (vestibulocochlear)
nerve which goes to the cochlea
 Eustachian tube
This is a 3cm to 4cm tube that extends from the middle ear to
the nasopharynx
 External auditory canal
This is the canal leading from the external auditory meatus to
the tympanic membrane and its about 2.5 cm in length
 External ear
This is the portion of the ear that consists of the auricle and
external auditory canal
It is separated from the middle ear by the tympanic membrane
 Incus
This is the second ear bone of the three ossicles in the middle
ear
It articulates with the malleus, stapes and the anvil
                                  4
 Inner ear
This is the portion of the ear that consists of the cochlea,
vestibule, and semicircular canals
 Internal auditory canal
This is a canal in the petrous portion of the temporal bone which
houses the facial and vestibulocochlear nerves (cranial nerves
VII and VIII)
 Malleus
This is the first bone (most lateral) and largest of the three
ossicles in the middle ear
It is connected to the tympanic membrane laterally and
articulates with the incus and the hammer
 Middle ear
This is the small, air-filled cavity in the temporal bone that
contains the three ossicles
 Organ of Corti
This is the end organ of hearing located in the cochlea
 Ossicles
These are the three small bones within the middle ear ie malleus,
incus, and stapes
                                5
 Oval window
This is a fenestra (aperture) between the vestibule of the inner
ear and the middle ear which is occupied by the base of the
stapes
 Pinna
This is the outer part of the external ear which collects and
directs sound waves into the external auditory canal and the
auricle
 Round window
This is a fenestra(aperture) between the middle ear and the inner
ear at the base of the cochlea which is occupied by the round
window membrane
 Semicircular canals
This is the superior, posterior, and lateral bony tubes that form
part of the inner ear which contain the receptor organs for
balance
 Stapes
This is the third (most medial) ossicle of the middle ear which
articulates with the incus, the stirrup and its footplate fits into
the oval window
                                 6
 Temporal bone
This is a bone on both sides of the skull at its base composed of
the squamous, mastoid, and petrous portions
 Tympanic membrane
This is the membrane that separates the middle ear from the
external auditory canal and is also referred to as the eardrum
 Vestibulocochlear nerve
This is a cranial nerve VIII containing the cochlear (acoustic)
nerve and vestibular nerve
                                7
 When evaluating hearing, three characteristics are very
  important ie frequency, pitch, and intensity.
 Frequency is the number of sound waves emanating/
  orignating from a source per second and is measured as
  cycles per second, or Hertz (Hz). Its ranges from 20 to 20,000
  Hz
 Pitch is the term used to describe frequency ie a tone with
  100 Hz is considered of low pitch and a tone of 10,000 Hz is
  considered of high pitch.
 The unit for measuring loudness (ie, intensity of sound) is the
  decibel (dB) which is the pressure exerted by sound.
 Hearing loss is measured in decibels, a logarithmic function
  of intensity that is not easily converted into a percentage.
 Tympanogram or impedance audiometry
 This measures middle ear muscle reflex to sound stimulation
  and compliance of the tympanic membrane by changing the
  air pressure in a sealed ear canal. Compliance is impaired
  with middle ear disease
 Electronystagmography
                                8
 This is the measurement and graphic recording of the
  changes in electrical potentials created by eye movements
  during spontaneous, positional, or calorically evoked
  nystagmus
 It is also used to assess the oculomotor and vestibular
  systems and their corresponding interaction.
 It helps in diagnosing conditions such as Ménières disease
  and tumors of the internal auditory canal or posterior fossa
 Platform posturography
 This is used to investigate postural control capabilities.
 Sinusoidal harmonic acceleration or a rotary chair
 This is used to assess the vestibulo-ocular system by
  analyzing compensatory eye movements in response to the
  clockwise and counterclockwise rotation of the chair
 Middle ear endoscopy
 This is performed to evaluate suspected perilymphatic fistula
  and new-onset conductive hearing loss, the anatomy of the
  round window before transtympanic treatment of Ménières
                                 9
  disease, and the tympanic cavity before ear surgery to treat
  chronic middle ear and mastoid infections
HEARING IMPAIRMENT (HEARING LOSS)
 Hearing impairment and dizziness are major symptoms of
  inner ear problem that can hinder communication with
  others, limit social activities, and negatively impact
  employment.
 Hearing loss diminishes the individual aesthetic enjoyment of
  major aspects of daily living and can adversely affect quality
  of life
Etiology
Hearing loss is a symptom rather than a specific disease or
disorder and can be as a result of mechanical, sensory or neural
problems due to;
   Trauma to the ear and head
   Infections or diseases of the ear
   Tumours to the ear and CNS
   Advancing age (52 years)
   Presence of wax in the ear
   Foreign bodies in the ear
                                10
   Ear retraction
   Scarring or perforation of the tymphanic membrane
   Occupation eg carpentry, plumbing and coal mining
   CVA
Risk Factors for Hearing Loss
 Family history of sensorineural impairment
 Congenital malformations of the cranial structure (ear)
 Low birth weight (<1500 g)
 Use of ototoxic medications (eg, gentamicin, loop diuretics)
 Recurrent ear infections eg otitis media
 Bacterial meningitis
 Chronic exposure to loud noises
 Perforation of the tympanic membrane
Types of healing loss
Conducting Hearing Loss: Loss of the hearing from mechanical
problem
 Sensorineural Hearing Loss: Loss of hearing involving the
cochlea and auditory nerve; bone and air conduction equal but
diminished.
                               11
 Neural Hearing Loss: A sensorineural hearing loss
originating in the nerve or brainstem.
 Fluctuating Hearing Loss: A sensorineural hearing loss that
varies with time.
 Sensory Hearing Loss: A sensory neural hearing loss
originating in the cochlea involving the hair cells and nerve
endings.
 Sudden Hearing Loss: A sensorineural hearing loss with a
sudden onset.
 Central Hearing Loss: Loss of hearing from damage to the
brain auditory pathways or auditory
center.
 Functional Hearing Loss: Loss of hearing for which no
organic lesion can be found.
 Mixed Hearing Loss: Elements of both conduction and
sensorineural hearing loss.
Pathophysiology
 Conductive Hearing Loss results from any interference with
  the conduction of sound impulses through the external
  auditory canal, the eardrum, or the middle ear.
                                12
   Conductive hearing loss may be caused by anything that
    blocks the external ear, such as wax, infection or a foreign
    body, a chickening, retraction, scarring or perforation of the
    tymphanic membrane; or any pathophysiological changes in
    the middle ear affecting or fixing one or more of the ossicles.
 Sensorineural Hearing Loss results from disease or trauma to
    the inner ear, neural structure, or nerve pathways leading to
    the brainstem.
 Some of the causes of nerve deafness are infectious
    diseases, (measles, mumps and meningitis), arteriosclerosis,
    ototoxic drugs, neur of cranial nerve VIII, otospongiosis (form
    of progressive deafness) caused by the formation of new
    abnormal sponge bone in labyrinth, trauma to the head or
    ear, or degeneration of the organ of corti occuring most
    commonly from an advancing age (Presbycusis).
 Central deafness is also known as central auditory
    dysfunction, results from the inability of the CNS to interpret
    normal auditory stimuli and may be due to tumour or CVA.
Clinical Manifestations
                                 13
Early manifestations of hearing impairment and loss may
include
 Tinnitus
 Increasing inability to hear in groups and a need to turn up
  the volume of the television
 Withdrawal , suspicion, loss of self-esteem and insecurity
  following advanced hearing loss
 Hearing impairment can also trigger changes in attitude, the
  ability to communicate, the awareness of surroundings, and
  even the ability to protect oneself, affecting the persons
  quality of life.
 In a classroom, a student with impaired hearing may be
  disinterested and inattentive and have failing grades.
 Isolation while at home and may miss part of the
  conversations
                               15
  vegetable foreign bodies such as beans, maize and peas
  which swell with water
 Animate foreign bodies eg insects such as flies, cockroaches,
  ants, fleas etc
Clinical features
 Blockage of the ear and the FB may be seen
 Noise in the ear if the FB is a live for example insects
 Discomfort and irritation within the ear
 Hearing loss when the FB occludes the external canal
 Pain in the ear if the FB stays for so long in the ear
 Bleeding or discharge from the ear following attempts to
  remove the FB
Management
 Syringe the ear with clean lukewarm water to remove the FB
  if its smooth and round
 If FB cannot be removed by syringing, remove the FB with a
  foreign body hook under general anaesthesia for children
  and sensitive adults
  • Do NOT use forceps to try to grasp round objects, as this
     will only push the FB further in the ear
                                 16
 If there is an edge to grab the FB, remove it with Hartmann
  (crocodile) forceps
 If the FB is an insect, kill it by inserting clean cooking oil or
  water into the ear and then syringe it out with lukewarm
  water
 If the FB is a cockroach remove it using a crocodile forceps
  since they have hooks on their legs that makes removal by
  syringing impossible
 If the FB is an impacted seed do not syringe the ear with
  water as the seed may swell and block the ear but refer
  immediately to ENT specialist if you cannot remove it with a
  hook
 Suction of the ear may also be useful for certain FBs
Complications of FBs
   Hearing loss due to damage of the ear drum
   Otitis media or Otitis external
                                17
   Injury to the ear canal, ear drum and or ossicles
IMPACTED CERUMEN
This is the accumulation of wax in the external ear
Wax in the ear is normal and usually comes out naturally from
time to time.
It may accumulate to form a wax plug and cause a problem for
the patient.
Causes
 Excessive and thick wax production
 Small, tortuous and hairy ear canal
 Use of ear pads
Clinical features
 Blockage of the ears
 Buzzing sound in the ears
 Sometimes there is mild ear pain
 Hearing loss due to blockage of the canal
 Tinnitus
 Vertigo
 Cough
Management
                               18
General treatment measures
 Soften the wax by inserting drops of Vegetable oil or
  Glycerine or Sodium bicarbonate into the ear 3 times a day
  for a few days to allow the wax fall out of the ear on its own
 Syringe the ear carefully with clean Luke warm water after
  insertion of cooking oil or sodium bicarbonate to soften the
  wax
Cautions
 Advise the patient not to poke anything into the ear in an
  attempt to clean it as this may damage the eardrums eg
  sticks
 Do not syringe the ear if (a) there is history of ear discharge
  and (b) if there is pain
OTITIS EXTERNA
 This is the infection of the external ear canal which may
  either be localized (furunculosis) or generalised (diffuse).
Causes
These include;
                                19
 Bacterial      infections   eg        staphylococci   aureus   and
  pseudomonas spps
 Fungal infections eg Aspergillus
 Viral infections
Predisposing factors
These include;
 Water in the ear canal (swimmers ear)
 Trauma to the skin of the ear canal permitting entrance of
  organisms into the tissues
 Systemic conditions such as vitamin deficiency and endocrine
  disorders eg diabetes mellitus
 Dermatosis such as psoriasis, eczema, or seborrheic
  dermatitis.
 Allergic reactions to hair spray, hair dye
Clinical features
 Ear pain (otalgia)
 Swelling and tenderness on pulling the pinna (external ear)
 Itching of the ear (especially for fungal infections)
 Discharge from the external auditory canal which may be
  yellow or green and foul smelling
                                   20
 Aural tenderness (usually not present in middle ear
  infections)
 Pruritus
 Hearing loss or a feeling of fullness
 Fever
 Cellulitis
 On otoscopic examination, the ear canal is erythematous and
  edematous
 In fungal infections, the hairlike black spores may even be
  visible.
Investigations / diagnosis
 Good history and physical examination of the external ear
 Pus swab for microscopy to identify the status of the
  discharge eg if the discharge is white or black it is fungal and
  if yellow it is bacterial
 Pus swab for culture and sensitivity to indentify the causative
  organisms
Management
                                21
The principles of therapy are aimed at relieving the discomfort,
reducing the swelling of the ear canal, and eradicating the
infection.
The treatment options include;
 Thorough cleaning of the external ear canal
 Apply antibiotic ear drops, e.g. Chloramphenicol ear drops
  0.5% 2 drops into the ear three times daily for 14 days
 Apply topical antibiotics on the area or the ear affected eg
  Neomycin or chloramphenical cream
 Give analgesics to relieve ear pain e.g. NSAIDs such as
  paracetamol 1g tds for 3 days
 If severe administer intravenous antibiotics eg cloxacillin 500
  mg 6 hourly for 5 or 7 days and children 12.5 or 25 mg/kg per
  dose.
If fungal ear infection is suspected;
 Syringe the ear to remove any crusting
 Apply Clotrimazole solution into the ear once a week for 4-8
  weeks or
 Give capsules fluconazole 200 mg once daily for 10 days
                                 22
MALIGNANT EXTERNAL OTITIS
 This is a more serious external ear infection and is sometimes
  called temporal bone osteomyelitis although its rare.
 Its a progressive, debilitating and fatal infection of the
  external auditory canal, the surrounding tissue and the base
  of the skull
 Its caused by Pseudomonas aeruginosa and mainly occurs in
  patients with low resistance to infection eg patients with
  diabetes
Clinical features
   Severe stabbing otalgia
   Purulent ear discharge
   Granulation tissue in the floor of the external canal, at the
    junction of cartilaginous part with bony part.
Investigations
                                23
   Pus swab for culture and sensitivity to identify the
     causative organism
   CT scans of the temporal bone to detect and reveals skull
     base destruction.
   Biopsy for histopathology to exclude malignancy
Management
 Successful treatment includes control of the diabetes,
  administration of antibiotics (usually intravenously), and
  aggressive local wound care by debridement, apply antibiotic
  ear drops.
Complications
 Osteomyelitis of the skull base and temporal bones
 Cranial nerve palsy
OTITIS MEDIA
This is an acute or chronic infection of the middle ear
It occurs mostly in children
Acute otitis media
This is an acute infection of the middle ear, usually lasting less
than 6 weeks.
                                24
Causes
 Bacterial     infection    e.g.        Streptococcus    pneumoniae,
  Haemophilus influenza etc
   The bacteria enter the middle ear after eustachian tube
     dysfunction caused by obstruction related to upper
     respiratory    infections,     inflammation      of   surrounding
     structures (eg, sinusitis, adenoid hypertrophy), or allergic
     reactions(eg, allergic rhinitis).
   Bacteria can also enter the eustachian tube from
     contaminated secretions in the nasopharynx and the
     middle ear from a tympanic membrane perforation.
Risk factors of acute otitis media
These include
 Young age
 Congenital abnormalities
 Immune deficiencies
 Passive smoke inhalation
 Eustachian tube damage from viral infections
 Family history of otitis media
 Recent upper respiratory infections
                                    25
 Gender mainly male
 Participation in day care
 Bottle feeding
 Allergic rhinitis.
Clinical features
Symptoms vary with the severity of the infection;
    Usually its unilateral in adults
    Pain in and about the ear (otalgia), which may be intense
     and relieved only after spontaneous perforation of the
     eardrum or after myringotomy.
   Fever
   Drainage from the ear (otorrhea)
   Hearing loss
   Tympanic membrane is erythematous and often bulging.
   Conductive hearing loss due to exudate in the middle ear.
   On otoscopic examination, the external auditory canal
     appears normal and the patient reports no pain with
     movement of the auricle
Differential diagnosis
   Foreign body in the ear
                                 26
   Otitis externa and media with effusion
   Referred ear pain, e.g. from toothache
Investigations
   Good history and physical examination of the ear
   Pus swab for culture and sensitivity to detect and reveal
     the causative micro organism
Management
The outcome of acute otitis media depends on the efficacy of
therapy (ie, the prescribed dose of an oral antibiotic and the
duration of therapy), the virulence of the bacteria, and the
physical status of the patient.
The treatment options include;
 Medical treatment in case of acute infection
   Give capsules Amoxicillin 500 mg every 8 hours for 5 days
   Or erythromycin 500 mg every 6 hours in penicillin allergy
   Give analgesics, e.g. Paracetamol to relieve pain
   Apply antibiotic ear drops, 2 drops every 6 to 8 hours daily
                                  27
 Surgery mainly Myringotomy or Tympanotomy.
(Where an incision is made into the tympanic membrane to
relieve pressure and to drain serous or purulent fluid from the
middle ear)
Complications
 Perforation of the tympanic membrane
 Chronic otitis media.
 Mastoiditis
 Meningitis
 Brain abscess
CHRONIC OTITIS MEDIA
This is as result of repeated episodes of acute otitis media
causing irreversible tissue pathology / infection and persistent
perforation of the tympanic membrane.
Chronic infections of the middle ear damage the tympanic
membrane, destroy the ossicles, and involve the mastoid.
Clinical features
 Pus discharge from the ear (persistent or intermittent foul-
  smelling otorrhea)
 Healing loss
 Pain in the ear in case it has involved the mastoid bone
                               28
 Tenderness, swelling and edema of the post auricular area
 Perforation of the tympanic membrane
 Cholesteatoma (an in growth of the skin of the external layer
  of the eardrum into the middle ear).
Management
   Medical treatment
   Surgery
 Medical Treatment
   Systemic antibiotics are NOT recommended because they
    are not useful and can create resistance
   Aural irrigation using hydrogen peroxide mixed with clean
    lukewarm water 2-3 times daily
   Drying of the ear by wicking 3 times daily until the ear is
    dry
   Instillation of the ear antibiotics eg ciprofloxacin ear drops
    0.5% or Caf ear drop 2 - 4 drops into the ear each time
    after drying or
   Application of antibiotic powder in cases of otorrhea
 Surgery
Surgical procedures include;
                               29
 Tympanoplasty, to prevent recurrent infection, re -
  establishe middle ear function, close the perforation, and
  improve hearing.
 Ossiculoplasty, to reconstruct the middle ear bones to
  restore hearing.
 Mastoidectomy, to remove cholesteatoma, gain access to
  diseased structures, and create a dry (noninfected) and
  healthy ear
Note
Refer if complications occur, e.g., meningitis, mastoid abscess
(behind the ear), infection in adjacent areas, e.g. tonsils, nose
Complications of otitis media
Cranial complications (bony skull):
   Mastoiditis
   Otitic labyrinthitis
   Otitic facial paralysis
Intra-cranial complications (inside the intra cranial cavity):
   Extra-dural abscess
   Sub-dural empyema
   Lateral sinus thrombosis or thrombo-phlebitis
                                 30
   Meningitis
   Brain abscess (Temporal lobe or Cerebellum)
   Otitic hydrocephalus
Extra-cranial complications (in the soft tissues of the head and
neck):
   Otitis externa
   Retropharyngeal abscess
Prevention
 Health education of the public about Otitis media e.g. by
  advising patients on recognizing the discharge of otitis media
  (believed by some to be milk in the ear)
 Early diagnosis and treatment of acute otitis media and
  upper respiratory tract infections
                               31
 Treatment of infections in adjacent area, e.g. tonsillitis
MASTOIDITIS
This is the inflammation of the mastoid bone (bone behind the
ear) resulting from an infection of the middle ear (otitis media)
Chronic otitis media may cause chronic Mastoiditis and may
lead to the formation of cholesteatoma (ingrowth of the skin of
the external layer of the eardrum into the middle ear) and if
untreated, osteomyelitis may occur
Causes
Usually is a complication of otitis media
Clinical features
 Severe pain felt over the mastoid bone
 Tenderness behind the ear (postauricullar tenderness)
 Ear pain (otalgia)
 The mastoid area may be erythematous and edematous
                                33
 Swelling in post auricular area (pinna is pushed down and
  forward)
 Discharge from the middle ear (otorrhea)
 Fever
 Mental confusion is a grave sign of intracranial spread of
  infection (Refer to ENT surgeon immediately)
 Headache
Investigations / diagnosis
 Diagnosis of mastoiditis is mainly by clinical features
 Mastoid x-ray to detect and reveal the extent and severity of
  the condition on the mastoid bone and r/o cranial
  complications
 Cranial CT scan to comfirm the diagnosis and r/o cranial
  complications
 Full blood count (CBC) to r/o leucocytosis
 Pus swab for culture and sensitivity to detect and reveal the
  causative agent
Management
This may be medical treatment and surgery
                                34
Medical treatment
 Give analgesics to relieve pain eg tablets ibuprofen 400mg
  tds for 5 days
 Give oral antibiotics if mild eg caps ampiclox 500mg or
  flucloxacillin 500mg qid for 7 days
 In severe admit the patient and administer intravenous
  antibiotics eg iv ceftriaxone 2g once daily           and iv
  metronidazole 500mg three times daily
Surgery mainly mastoidectomy to drain pus if the abscess has
formed
Complications of mastoiditis
 Dizziness or vertigo as it affects the vestibular system which
  maintains body balance.
                               35
 Destruction or erosion of the mastoid bone.
 Subperiosteal abscess (pus formation in the inner layer of the
  bony tissue).
 Cranial nerve involvement. Gradenigos syndrome  Facial
  nerve paralysis, deep facial pain and otitis media.
 Meningitis (inflammation of membranes of the brain).
 Brain abscess.
 Bezold abscess (collection of pus behind the muscle of the
  neck)
 Moderate to severe hearing loss.
These are harmless growth that does not spread or invade other
tissues that develops in the ear
                                   36
 They do not metastasize
 They do not recur after removal
 If completely excised they rarely endanger life.
 Their effects are due to size and site.
 They are well differentiated
 They have a low mitotic rate
 They resemble the tissues of origin
Examples of benign masses / tumors of the ear
These include;
 Exostoses
These are small, hard, bilateral bony protrusions found in the
lower posterior bony portion of the ear canal
If large, it leads to occlusion of the canal causing conductive
deafness.
 Cholesteatoma
                                 38
Complications of surgery for acoustic neuroma
These include;
  • Facial nerve paralysis
  • Cerebrospinal fluid leak
  • Meningitis
  • Cerebral edema
 Sebaceous cyst
These are small sac within the ear filled with skin secretions
mainly sebum
 Osteomas (bone tumors)
 Keloids
This growth of excessive scar tissues with in the ear after an
injury
Clinical features of benign tumors in the ear
Early symptoms include;
 Hearing loss
 Tinnitus
 Dizziness
 Unsteadiness
                               39
 Other symptoms develop if the tumor enlarges and
  compresses other parts of the brain, the facial and trigeminal
  nerves
Diagnosis
 Early diagnosis is based on MRI scan and hearing test
Management
 The best treatment of these tumors is by surgical removal of
  the tumor and after treatment hearing usually returns to
  normal.
 Repeated injections of corticosteroid such as triamcinolone
  or hydrocortisone for Keloids
Malignant tumours of the ear
These are harmful tumors capable of spreading and invading
other tissues far away from the site of origin (to distant areas)
Characteristics of Malignant tumours of the ear
 They expand and infiltrate locally
 They have no capsule or encapsulation is rare
 They metastasize to other organs via blood, lymphatics or
  body spaces
 They endanger life if untreated.
                                 40
 They have varying degrees of differentiation from tissue of
  origin,
 They have a high mitotic rate.
Examples of malignant tumors of the ear
These include;
 Basal cell carcinomas on the pinna
 Squamous cell carcinomas in the ear canal.
   These are common skin cancer that often develop on the
     external ear after repeated and prolonged exposure to the
     sun
   They may also develop in or spread to the ear canal
   If untreated, squamous cell carcinoma may spread through
     the temporal bone, causing facial nerve paralysis and
     hearing loss.
 Ceruminoma
This is cancer of the cells that produce wax in the ear and
develops in the outer third of the ear.
Treatment is by surgical removal of the cancer and the
surrounding tissue
 Melanoma
                                 41
This is also a more rapidly spreading form of skin cancer that
can also develop in the skin of the outer ear canal
Clinical features of malignant tumors of the ear
   Facial nerve paralysis
   Hearing loss
   Otalgia (severe ear pain)
   Swelling and tenderness of the ear
   Dizziness
   Headache
Management
   Surgery
   Radiation therapy
   Chemotherapy
                                42
 Usually occurs in children <5 years and mentally retarded
  persons/ adults
 Common foreign objects which may be put into the nose
  include;
  • Seeds, e.g. bean, peas, ground nut, maize
  • Piece of paper
  • Foam rubber (e.g. mattress foam)
  • Beads
  • Stones
  • Buttons
  • Metal objects eg ball bearing
Predisposing factors
 Curious children
 Mental ill patients
 Trauma
Clinical features
 Usually they are inserted by the child and are mostly found in
  the right-hand nasal cavity
 Foreign body noticed by a child or parent may be visible or
  felt
                                43
 Nasal bleeding if object is sharp
 Difficult breathing through the affected nostril
 Irritation or pain in the nose
 Unilateral foul-smelling discharge from the nose
Investigations
 Usually not required (Clinical diagnosis is enough)
 Nasal x-ray in case of metallic objects like wires or ball
  bearings to r/o other nasal complications
Management
First aid
 Blow through the mouth while blocking the unaffected side
  of the nose
 Grasp firmly and remove the paper or foam rubber with a
  fine forceps e.g. Tilleys forceps
 Other objects, carefully pass a blunt hook behind the object,
  and then gently pull it out
 If the object is visible and round encourage the patient to
  blow through the nose gently to allow the FB come out
 If the above fails refer to an ENT specialist
Prevention
                                   44
 Always caution children about placing objects in mouth,
  nose, and ears
Complications
 Sinusitis
 Otitis media
 Accidental migration of foreign body in the lower airway
 Nasal stone or Rhinolith
                                 46
 Signs and symptoms of shock if bleeding is severe such as
  hypotension, cold clammy skin, severe pallor
 Signs and symptoms of predisposing cause eg hypertension
  such as headache, dizziness, blurred vision, drowsiness etc
Investigations
 CBC to r/o anaemia and know the patients Hb level
 Blood clotting profile and platelet count to detect for blood
  clotting time and platelet level
 Nasal endoscopy to detect and reveal the bleeding site and
  r/o other nasal complications
 Nasal CT scan to r/o fractures and other complications
Management
 First aid
 Sit the patient up (if patient not in shock) and tilt the head
  forward to avoid pooling of blood into the posterior pharynx
  or aspiration of blood
 Instruct patient to pinch the nose between the finger and the
  thumb for 15 minutes, breathe through the mouth and spit
  out any blood
                                47
 Alternatively, apply a cotton tampon into the nose to try to
  stop the bleeding.
 Suction to remove excess blood and clots from the field of
  inspection.
 Application    of    anesthetics   and   nasal   decongestants
  (phenylephrine, one or two sprays) to act as vasoconstrictors
 Cauterization of the visible bleeding sites with silver nitrate
  or electrocautery/ diathermy
If bleeding continues:
 Pack the nose with gauze and tetracycline eye ointment
  using a forcep and leave the gauze in place for 24-48 hours
 Administer antibiotics eg iv ceftriaxone 2g once daily
 Administer analgesics eg Diclofenac 75mg three times daily
 Give anti hypertensives if the cause is hypertension
 Give Anti malarial if the cause is malaria
 In case bleeding still continues refer the patient to the ENT
  specialist
Prevention
 Avoid picking the nose
 Treat/control predisposing conditions
                                48
NASAL ALLERGY
 This is an abnormal reaction of the nasal tissues to certain
  allergens which tends to start in childhood
 Vasomotor rhinitis starts in the 20s and 30s.21
Causes
Predisposing factors include;
 Hereditary: Family history of similar or allied complaints
 Infections may alter tissue permeability
 Psychological and emotional factors in vasomotor rhinitis
 Changes in humidity and temperature
 Dust mite, infections
 Certain foods
 Drugs e.g. acetylsalicylic acid
 Alcohol, aerosols, fumes
Clinical features
 Often present in school age children
 Sometimes preceded or followed by eczema or asthma. (Less
  common in persons >50 years old)
 Paroxysmal sneezing
                                49
 Profuse watery nasal discharge
 Nasal obstruction, variable in intensity and may alternate
  from side to side
 Postnasal drip (mucus dripping to the back of the nose)
Investigation
 Careful history is most important
 Large turbinates on examining the nose
Management
 Avoid precipitating factors (most important)
 Reassure the patient
 Give antihistamines, e.g. Chlorphenamine 4 mg every 12
  hourly for 21 days, then as required thereafter if it recurs
 Apply nasal decongestants, e.g.          Pseudoephedrine or
  xylometazoline to relieve nasal congestion
 Surgery in case of obstruction of the nose
ACUTE SINUSITIS
Inflammation of air sinuses of the skull
Causes
 Allergy
                                50
 Foreign body in the nose
 Viruses, e.g. rhinovirus, often as a complication of URTI
 Dental focal infection
 Bacteria, e.g., Streptococcus pneumoniae, Haemophilus
  influenzae, Streptococcus pyogenes
Clinical features
 Rare in patients <5 years
 Pain over the cheek and radiating to frontal region or teeth,
  increasing with straining or bending down
 Redness of nose, cheeks or eyelids
 Tenderness due to pressure over the floor of the frontal
  sinus immediately above the inner canthus
 Referred pain to the vertex, temple or occiput
 Postnasal discharge
 A blocked nose/ Nasal blockage
 Persistent coughing or pharyngeal irritation
 Hyposmia
 Fever and malaise
Investigations
                                51
 C&S of the discharge to detect and reveal the causative
  micro organism
 X -ray of sinuses to detect and reveal the extent and severity
  of condition to the skull sinuses and r/o other complications.
 Nasal CT scan to comfirm the diagnosis and r/o other nasal
  complications
Management
General measures
 Steam inhalation to clear the blocked nose
 Give analgesics to relieve pain eg NSAIDs
 Nasal irrigation with normal saline to remove discharge
 Give Antibiotics in case of infection such as Amoxicillin 500
  mg 8 hourly for 7-10 days
 In case of dental infection, extract the tooth and        give
  antibiotics such as Amoxicillin 5 00mg Metronidazole 400mg
  8 hourly for 7 to 14 days
 In case of FB refer immediately to the ENT specialist for
  further management
Notes
                               52
Do NOT use antibiotics except if there are clear features of
bacterial sinusitis, e.g., persistent (> 1 week) purulent nasal
discharge, sinus tenderness, facial or periorbital swelling,
persistent fever
Complications
   Chronic sinusitis
   Osteomylitis
   Orbital cellulitis
   Orbital abscess
   Meningitis
   Brain abscess
   Thrombophlebitis of cavernous sinus
   Pharyngitis
   Tonsillitis
   Bronchitis and pneumonia
   Otitis media
   Septicemia
RHINITIS
   Rhinitis refers to inflammation of the mucous membrane
     of the nose.
                              53
   It may be acute, chronic or allergic rhinitis.
   All forms of rhinitis cause sneezing, nasal discharge with
    nasal obstruction and headache
Acute rhinitis
 This is an inflammatory condition of the mucous membrane
  of the nose and accessory sinuses caused by a filterable virus.
 It is spread by airborne droplet sprays emitted by the
  infected person while breathing, talking, sneezing or
  coughing or by direct hand contact.
 Its frequency increases during winter months, when people
  stay indoors and overcrowding
 Other factors such as chills, fatigue, physical and emotional
  stress and patient compromised immune status, may
  increase susceptibility
Predisposing factors
 Allergy
 Environmental pollution by dust, fumes
 Overuse of nasal decongestants (Rhinitis medicamentosa)
 Hormone imbalances : e.g. during pregnancy, puberty
Clinical features
                                54
 Tickling and irritation within the nose
 Sneezing or dryness of the nose or nasopharynx
 Copious nasal secretions
 Nasal obstruction
 Watery eyes
 Elevated temperature,
 General malaise, and
 Headache
 Thick and sticky mucus within a few days
Management:
 Bed rest
 Plenty of warm oral fluids intake
 Proper nutrition
 Use of home remedies such as steam, honey etc
 Use of antipyretics and analgesics such as tablets
  paracetamol 1g three times daily
 Apply Xylometazoline 0.05% or 0.1% nose drops 2-3 drops
  into each nostril 3 times daily
Causes
Its caused by allergens such as pollen of trees, grasses or weeds,
spores of molds, dustmites, and animal danders.
Clinical features
 Nasal congestion
 Sneezing
 Watery itchy eyes and nose,
 Altered sense of smell
 Thin watery nasal discharge
 Headache
                                56
 Cough
 Hoarseness or the recurrent need to clear throat
Management
 Avoidance of the causative agents mainly allergens such as
  smoke, pollens, dust mites, mold spores
 Use of antihistamines such as chloropheniramine, cetrizine
  or loratidine
 Apply xylometazoline 0.05 or 0.1% nasal drop 2  3 drops in
  each nose daily
 Administer iv / im hydrocortisone 100- 200mg three times
  daliy
Chronic rhinitis
This is a chronic inflammation of the mucous membrane with
increased nasal mucosa caused by repeated acute infections,
allergy and or vasomotor rhinitis.
ATROPHIC RHINITIS
This is a chronic infection of the nasal mucosa in which various
components become thinner (atrophy) due to fibrosis of the
terminal blood vessels
Cause
                                57
The cause is unknown but its associated with
 HIV/AIDS
 Poor socioeconomic status
 Syphilis
 Rhinoscleroma (early stages)
Clinical features
 Tends to affect both nasal cavities and affects females more
  than males
 Foul stench not noticed by patient who cannot smell
 Crusts and bleeding points in the nose
 Epistaxis when crusts separate
 Sensation of obstruction in the nose
 Nasal airway very wide
Investigations
 C&S of smear of nasal material to identify the causative
  micro organisms
 X-ray to detect for the extent and severity of the condition
  along the nasal cavity and to r/o sinusitis
Management
                                58
 Clean nasal cavities twice daily to remove crusts
  (most important)
 Syringe the nose or douche it with warm normal
  saline Or sodium bicarbonate solution 5% (dissolve 1
  teaspoon of powder in 100 ml cup of warm
  water) then apply tetracycline eye ointment 1%
  inside the nose twice daily
 Give amoxicillin 500 mg every 8 hours for 14
  days and in case of rhinoscleroma: Give 1 g every
  8 hours for 6 weeks
 In case symptoms persist refer to ENT specialist
Complications of rhinitis
   Otitis media
   Sinusitis
   Pharyngitis
   Laryngo-bronchitis
Adenoid Disease
 Enlargement or inflammation of nasopharyngeal tonsil.
 Common in small children.
Clinical features
                              59
May be due to enlargement, inflammation, or both;
 Obstruction of the nose leading to mouth breathing,
  difficulty eating, snoring, jaw deformities
 Obstruction of Eustachian tube leading to hearing loss, which
  fluctuates due to fluid in middle ear (Glue ear)
 Recurrent otitis
 Discharge from the nose
 Recurrent cough
 Physical and other developmental retardation, e.g. small size
  for age
Investigations
 Diagnosis is usually based on history and physical
  examination
 X-ray for neck soft tissue( lateral view) to detect and reveal
  narrowing of the post-nasal space
Management
 In mild cases manage on conservative treatment with
  chlorpheniramine 1-2 mg daily (depending on age) for 7 days
 Apply Topical nasal steroids if available
 If moderate or severe refer to the ENT specialist
                                60
 Adenoidectomy in cases of chronic nasal obstruction and
  discharge, secretory Otitis media and sleep apnoea
Benign tumors of the nose
All areas of the nasal cavity and paranasal sinuses can be
affected, but the lateral wall, ethmoids and maxillary sinus are
the most common primary sites.
The frontal and sphenoid sinuses are rare primary sites for
reasons that are unknown.
Examples of benign tumors of the nose include;
 Inverted papilloma (IP)
This is a warty, slow-growing tumour that arises from the
epithelial lining of the nasal cavity nose.
Its more common in males more than females at the ratio of
(5:1).
Its similar to a nasal polyp and causes nasal blockage.
 Haemangioma
This is a soft reddish polyp on the anterior part of septum that
bleeds easily on touch and usually brings about nasal blockage.
The common types include the capillary haemangioma which is
a bleeding polypus of the nasal septum and the cavernous
haemangioma which occurs on the lateral nasal wall
 Osteoma
                               61
This is the most common benign tumour of the nose and sinuses
commonly in frontal sinus and followed by ethmoid
The common types include the compact (ivory) osteoma which
is common in the frontal sinus and the cancellous Osteoma
which is common in the ethmoid sinuses.
 Juvenile angiofibroma
This is a slow growing highly vascular tumour which arises
predominantly from the sphenopalatine region
Its common in adolescent and young adult males
The tumour is locally invasive and can cause life-threatening
epistaxis and nasal obstruction
 Nasal polyps
These are the most common non-cancerous tumour of the nasal
cavity and paranasal sinuses.
They are abnormal growths of the mucosal lining of the nose
and sinuses
Nasal polyps appear most frequently near the openings to the
sinuses in the nasal passage but they can also develop anywhere
throughout the nasal passages or sinuses.
                                  62
Causes
The exact causes of nasal polyps are not known but can be due
to the following risk factors
   Sensitivity to aspirin (people with an allergic response to
     aspirin or other NSAIDs (non-steroidal anti-inflammatory
     drugs) are more likely to develop polyps).
   Asthma.
   Allergic fungal sinusitis (an allergy to airborne fungi).
   Rhinitis / Rhino sinusitis (an inflammation of the nasal
     passage and sinuses)
   Cystic fibrosis (a chronic disease that affects organs such as
     the liver, lungs, pancreas, and intestines).
   Churg-Strauss syndrome (a disease that results in the
     inflammation of blood vessels).
   Age (occurs at any age, but young and middle-aged adults
     are more at risk).
   Genetics (as it may run into families).
These include;
                                63
   Stuffy, blocked or runny nose
   Loss of smell
   Loss of taste
   Headache
   Pressure in the head
 Snoring
Investigations
                                64
 Skin prick allergy test to r/o or identify if the cause is an
  allergy
 Nasal biopsy to r/o cancer
Management
Medical management
Complications
   Chronic sinusitis
   Obstructive sleep apnea
   Facial deformity
                                65
Prevention
                              66
This is the most common type of nasal cavity and paranasal
sinus cancer
Its most common in males above 40 years and
It commonly affects the lateral nasal wall, the maxillary and the
ethmoidal sinuses.
Adenocarcinoma
Malignant melanoma
This develops from cells called melanocytes that give the skin
its color and is an invasive, fast-growing cancer accounting for
about 1%
Inverting papilloma
Esthesioneuroblastoma
                                 67
This type of cancer is related to the nerves that control the
sense of smell.
Midline granuloma
Lymphoma
Sarcoma
Others include
                                68
   Olfactory neuroblastoma
   Adenoid cystic carcinoma
 Use of marijuana
 Fatigue
                                70
     A lump in the neck
Investigations / diagnosis
   Good physical examination
   Nasal biopsy to confirm the diagnosis
   Nasal x ray to r/o nasal blockage and other nasal
      complications
   CT / MRI scan to detect the size of the tumor, the extent of
      the disease on the nasal cavity (metastases)and r/o other
      nasal complications
Management
   Surgery eg excision, maxillectomy, neck dissection and
      craniofacial resection
   Radiation therapy
   Chemotherapy
   Palliation
                               71
T  Tumor, N  nodes and M- metastasis.
Primary tumor (T) in the nasal cavity and ethmoid sinus
 T3: The tumor extends into the maxillary sinus or to the bone
  surrounding the eye.
 T4b: The tumor invades any of the following: the back of the
  eye, the brain area, or the back of the head.
N (Nodes)
                                72
 N0 (N plus zero): There is no evidence of cancer in the
  regional lymph nodes.
 N1: The cancer has spread to 1 lymph node on the same side
  as the primary tumor. The cancer found is 3 centimeters (cm)
  or smaller. It does not extend into the tissue beyond the
  involved lymph node, called extranodal extension (ENE).
                               73
 N3b: The cancer has spread to any node, and it has spread to
  the tissue surrounding the lymph node (ENE).
M (metastasis)
This indicates that the cancer has spread to other parts of the
body, called distant metastasis.
Clinical features
 Sudden onset of choking followed by stridor (noisy
  breathing) or
 Cough
 Difficulty in breathing,
 Wheezing
 Hoarseness of voice if FB is stuck at the vocal cords
 Symptoms start suddenly, some symptoms may be transient
  (may disappear after a short period), but complications may
  present few days later such as sudden death, intractable
  pneumonia, branchiectasis, atelectasis, pneumothorax, lung
  abscess
                               75
 Upper airway obstruction as shown by flaring of the nostrils,
  recession of the chest inlet and or below the ribs, rapid chest
  movements and reduced air entry (usually on the right side)
Investigations
 Once    the    history   and   examination   are   suggestive,
  investigations can be omitted to save time
 Chest x-ray may show lung collapse, hyperinflation,
  mediastinal shift, shift of heart shadow
Management
Child
 In case the child is chocking, attempt to dislodge the FB by 3
  cycles of 5 back slaps or 5 chest compressions for infants or
  Heimlich manoeuvre for children
 Do not do blind finger sweeps
 In case the foreign body is visible in the mouth, remove it
  with a Magill forceps
 In case the child has severe respiratory distress, refer to
  higher level for airway visualization to the ENT specialist but
  give oxygen if necessary
Adult
                                 76
 Dislodge large FB, e.g. chunk of meat from the pharynx by
  cycles of 5 back slaps and Heimlich manoeuvre while
  standing behind the patient with both arms around the
  upper abdomen and give 5 thrusts. If the patient is pregnant
  or very obese, perform 6-10chest thrusts while the patient is
  lying on the back
 In case you still suspect any FB, refer for airway visualization
  to the ENT specialist for Endoscopy and extraction of the FB
  under general anesthesia
Prevention
 Do not give groundnuts or other small hard food items to
  children <2 years
 If a child is found with objects in the mouth, leave the child
  alone to chew and swallow or gently persuade the child to
  spit out the object (Do not struggle with/force the child)
Complications of FBs in the airway
   Sudden death
   Pneumonia
   Branchiectasis
   Atelectasis
                                77
   Pneumothorax
   Lung abscess
 Foreign Body in the Food Passage / Oesophogus
  This is any foreign object impacted into the oesophogus or
  food passage
Causes
 Accidental mainly in children and unconscious patients
 Large food bolus ingestion
Types of FBs commonly involved
These include:
 Fish or chicken bones often lodging in the tonsils, behind the
  tongue, or in the pharynx
 Coins in the esophagus especially in children.
 Disc battery (is particularly dangerous and requires
  immediate referral)
Clinical features
 Difficulty in swallowing ( the patient winces as he attempts to
  swallow)
 Pain in swallowing
 Drooling of saliva
                               78
 Pointing sign (patient may point to the site where aforeign
  body is stuck with a finger)
 FB may be seen, e.g., in tonsil, pharynx
Investigations
 Chest x-ray may reveal radio-opaque FB eg coins, fish bone
  and confirm the diagnosis
Management
 The approach depends upon the type of object ingested, the
  location of the object, and the patients clinical status.
 If the x  ray is negative, no symptoms and the FB does not
  belong to any dangerous category (magnets, disc batteries,
  sharp long objects, etc), expectant management is advised.
 If the patient is symptomatic and or the object is dangerous,
  immediately refer for further management by the ENT
  specialist
First Aid management
 Allow the patient to take only clear fluids mainly water if able
  to swallow
                                 79
 Do NOT try to dislodge or move the FB with solid food as it
  may push the FB into the wall of the oesophagus causing
  infection and sometimes death
 Give IV infusion if unable to swallow the liquids or if oral fluid
  intake is poor
 If FB is visible in the pharynx or tonsil grasp and remove it
  with a long forceps
 If patient tried to push FB with solid food and sustained an
  injury give broad-spectrum antibiotic eg capsules Amoxicillin
  500 mg and tablets metronidazole 400mg three times daily
  for 5 days
Prevention
 Keep potential FBs out of childrens reach
 Advise children to take care while eating by not taking in too
  large pieces of food and chewing of food thoroughly before
  swallowing
 Advise the patient once a FB is stuck in the esophagus to
  avoid trying to push it down with solid food as this may
  sometimes be fatal
                                 80
PHARYNGITIS (SORE THROAT)
This is the inflammation of the throat
Causes
 Most cases are viral
 Bacteria mainly Group A haemolytic Streptococci
 Diphtheria in non-immunized children
 Gonorrhoea (usually from oral sex)
 Ingestion of undiluted spirits
 Candida albicans in the immunosuppressed
Clinical features
 Onset is abrupt
 Throat pain
 Pain on swallowing
 Mild fever
 Loss of appetite
 General malaise
 Nausea and vomiting, and diarrhoea in children
 If the cause is viral there is presence of runny nose,
  hoarseness, cough, conjunctivitis, viral rash and diarrhea
                                   81
 If cause is bacterial there is presence of tonsilar exudates,
  tenderness of neck glands, high fever, and absence of cough
Differential diagnosis
 Tonsillitis, epiglottitis, laryngitis
 Otitis media if there is referred pain
Investigations
 Throat examination with torch and tongue depressor to
  reveal if inflamed
 Throat swab for microscopy to reveal presence or absence of
  pus
 Throat swab for C&S to reveal and identify the causautive
  micro organisms
 CBC to r/o leukocytosis
 Serological test for haemolytic streptococci (ASOT) to r/o or
  confirm the causative agent
Management
Most cases are viral and do not require use of antibiotics
therefore supportive treatment include;
 Keep the patient warm
                                    82
 Give the patient plenty of warm oral fluids e.g. tea or lemon
  tea
 Give analgesics to relieve pain e.g. tablets Paracetamol 1g 8
  hourly for 3 days
 Review the patient for progress after care
If the case is bacterial give antibiotics like;
 Capsules Amoxyl or Ampiclox 500mg 8 hourly for 10 days or
  Augmentin 625mg twice daily for 5 - 10 days if mild or
  moderate
 If severe admit the patient and give iv ceftriaxone 1g or 2g
  once daily and injectable analgesics
Complications
 Blockage of the airway (in severe cases)
 Middle ear infections
 Peritonsillar abscess (quinsy)
 Retropharyngeal and parapharyngeal abscesses
 Sinusitis
 Rheumatic fever
 Acute glomerulonephritis
 Septicemia
                                 83
 Bronchitis
 Pneumonia
 Rheumatic heart disease
 Septic arthritis
Notes
If not properly treated, streptococcal pharyngitis may lead to
acute rheumatic fever and retropharyngeal or peritonsillar
abscess, therefore ensure a full 10-day course of antibiotics is
completed where applicable
PHARYNGO-TONSILLITIS (tonsillitis)
This is the inflammation of the tonsils
Causes
 Streptococcal infection (most common)
 Viral infection (less common)
Clinical features
 Onset is sudden and is most common in children
 Sore throat
 Fever
 Shivering
 Headache
                                84
 Vomiting
 Enlargement of Tonsils with exudate
 Enlargement of cervical lymph nodes
Investigations
 Throat swab for C&S to reveal and confirm the causative
  micro organism
 CBC to r/o leukocytosis
Management
Medical management
 If bacterial and mild or moderate give broad spectrum
  antibiotics such as capsules ampiclox 500mg 4 hourly and
  analgesics such as ibuprofen 400mg 8 hourly fro 5 days
 If severe admit patient and give iv ceftriaxone 1- 2g once
  daily for 5 days
 If patient is allergic to penicillin give Erythromycin 500 mg
  every 6 hours for 10 days
 If the cause is viral give analgesics mainly paracetamol 1g
  three times daily and increase oral fluids
Surgery management is mainly by tonsillectomy (in cases of
chronic repetitive tonsillitis)
                                  85
Complications
Local complications
 Peritonsilar abscess (quinsy)
 Cellulitis
Systemic complications
 Bacterial endocarditis
 Glomerulonephritis
 Rheumatic fever
                                  86
 Inability to open the mouth
 Salivation and dribbling
 Bad mouth odour
 Thickened muffled (unclear) speech
 Ear pain
 Enlarged cervical lymph nodes
 Tonsil and soft palate reddish and oedematous
 Swelling pushing the uvula to opposite side (bulging
  collection of pus)
Differential diagnosis
 Tumour
 Tonsillitis
 Abscess in the pharynx
Investigations
C&S of pus if present or after drainage to identify the causative
microorganism
Management
 Medical /Conservative management
 Bed rest
 Oral hygiene
                                87
 Use of antibiotics ie
  • If mild, Benzyl penicillin 2 MU IV or IM every 6 hours for 48
     hours then switch to amoxicillin 500 mg every 8 hours to
     complete a total of 7 days
  • If moderate or severe, Ceftriaxone 1 g IV once daily for 7
     days, Child: 50 mg/kg IV Plus metronidazole 500 mg IV
     every 8 hours Child: 10 mg/kg IV every 8 hours
 Use of analgesics ie Im Diclofenac 75mg every 8 hourly daily
  to relieve pain
 Surgery mainly I&D to drain out pus from the abscess
TRACHEOSTOMY
Key facts
 This is a surgical procedure in which an opening is made into
  the trachea to relieve sudden laryngeal obstruction or for the
  purpose of establishing an airway
 The indwelling tube which is inserted into the trachea is
  called a tracheostomy tube
 Its either temporary or permanent
Indications of tracheostomy
                                  88
 To bypass an upper airway obstruction
 To facilitate removal of secretions along the trachea and
  bronchial or allow removal of tracheobrachial secretions
 To permit long-term use of mechanical ventilation
 To prevent aspiration of oral or gastric secretions in
  unconscious or paralyzed patient
 To replace an endotracheal tube
 To Permit oral intake and speech in the patient who requires
  long-term mechanical ventilation
 To establish and maintain patent airway
Causes of upper air way obstruction
Upper airway obstruction is due to the following
 Foreign bodies and vomitus imparted in the larynx
 Acute or chronic laryngitis
 Trauma
 Burns of the mouth or larynx
 Laryngeal edema
 Laryngeal paralysis
 Acute edema of the glottis
 Laryngeal carcinoma
                                89
 Peritonsillar abscess
 Retrosternal goiter
 Enlarged mediastinal lymph nodes
 Hematoma around the upper airway
 Thoracic aneurysm
Complications of tracheostomy
Complications may occur early or late in the course of
tracheostomy tube management or years after the tube has been
removed.
Early complications include
 Bleeding / haemorrhage
 Pneumothorax
 Air embolism
 Aspiration of secretions
 Subcutaneous or mediastinal emphysema
 Recurrent laryngeal nerve damage
 Posterior tracheal wall penetration
Long-term complications include
 Airway obstruction from accumulation of secretions or
  protrusion of the cuff over the opening of the tube,
                               90
 Infection
 Rupture of the innominate artery
 Dysphagia
 Tracheoesophageal fistula,
 Tracheal dilation
 Tracheal ischemia and necrosis.
 Tracheal stenosis after removal of the tube
Prevention of complications associated with endotracheal
and tracheostomy tubes
Complications of tracheostomy may be prevented by;
   Administering adequate warmed humidity.
   Maintaining the cuff around the tube.
   Suction to remove secretions and prevent aspiration.
   Maintaining the skin integrity by changing the tapes and
    dressing prn
   Auscultating the lungs for the lung sounds.
   Monitoring for signs and symptoms of infection including
    temperature and white blood cell count.
   Administering prescribed oxygen and monitoring of the
    oxygen saturation.
                               91
   Monitoring the patient for cyanosis.
   Maintaining adequate hydration of the patient.
   Using sterile technique when suctioning and performing
       tracheostomy care.
                              92
  assembled, tracheostomy tray, pen, piece of paper, bell,
  screen and table at the bed side.
                               93
 Observe the tracheostomy tube to ensure its in and is held
  in position by tapes tied around the patients neck and if
  cuffed is inflated
 Observe the NGT and urinary catheter to ensure its in
  position and is continiously draining out the bladder
 Take vital observations and maintain an observation chart
  and thereafter they will transfer the patient from theatre to
  the ward for post operative management with one nurse in
  front and other behind ensuring a patent air way, privacy and
  warmth respectively.
In ward
                               94
 Proper positioning the patient in a recumbent position to
  ensure a patent air way, breathing and circulation
 Proper positioning of the urinary catheter and the urine bag
  to ensure proper and continuous drainage.
 Proper positioning of the NGT to avoid the patient from
  sleeping on it and irritation of the gut
 Observation of the tracheostomy tube to ensure its in situ
  and properly held in position by the tapes tied around the
  patients neck and its not tight.
 Observation of the wound dressing for bleeding and to
  ensure its in situ
 Inflation of the tracheostomy tube if cuffed to minimize
  pressure on tracheal wall
 Oxygen therapy in case patient has difficulty in breathing to
  ease breathing and maintain the SPO2 above 95%
 Suction of mouth secretions present to ensure a patent air
  way, ease breathing, and avoid blockage of the air way or
  aspiration.
                                95
 Administration of iv fluids (Normal saline / 5% Dextrose) as
  prescribed and maintain afluid balance chart
 Administration of analgesics as prescribed eg im pethidine
  100mg to control pain
 Taking vital   observations as ordered and maintain an
  observation chart
                               96
These will be administered to the patient as prescribed by the
ENT surgeon and a treatment chart is maintained and they
include;
                                98
  or in case of carcinoma the tracheostomy will be permanent
  and will not be removed.
Elimination
   Bladder care
 A urinary catheter present is maintained in situ for
  continuous bladder drainage throughout the recovery period
  and urine in the urine bag is observed for color and amount
  and a fluid balance chart is maintained and any abnormality
  detected is noted and reported to the ENT surgeon or doctor
  on duty. After recovery a urinary catheter is removed as
  ordered by the doctor and the patient is offered a bed pan
                             99
  (female) or urinal ( male) prn to open the bladder throughout
  the post operative period.
   Bowel care
 After recovery, the patient is offered a bed pan prn to open
  the bowel and stool is observed for colour and amount and
  any abnormality detected is and noted reported to the ENT
  surgeon throughout the post operative period.
Diet
Hygiene
                               100
 Daily bed bath and bed making to ensure patients comfort in
  bed
 4 hourly treatments of pressure areas to prevent
  development of pressure sores.
 Daily oral care to prevent oral complications such as halitosis,
  stomatitis, gingivitis and to stimulate the appetite
Physiotherapy
                               101
 Administering post medication in time and prn
 Continued psychotherapy to alley anxiety
Advice on Discharge
                               102
 To always to go or come for radiation therapy and
  chemotherapy prn
                              103
     These are caused by chronic abuse of the voice such as,
       repeated yelling, shouting and strenuous singing
     Symptoms include hoarseness and breathy sounds
     Treatment is by surgical removal of the nodules and in
       childrens it disappears with voice therapy alone
     Prevetion is by stopping abusing the voice
• Laryngoceles
   These are out pouching of the mucous membrane of part
    of the voice box (larynx)
   They may bulge inwards resulting into hoarseness and air
    way obstruction or out wards producing a visual lump in
    the neck
   They are filled up with air and can be expanded when a
    person breathes out forcefully with the mouth open and
    nostril pinched shut
   Treatment is by surgery
Other Benign laryngeal tumors include
   Juvenile papillomas
   Hemangiomas
   Fibromas
                                104
   Chondromas
   Myxomas and
   Neurofibromas
 These may appear in any part of the larynx but Papillomas
  and neurofibromas can become malignant
 Symptoms of benign laryngeal tumors include;
   Hoarseness
   Breathy voice
   Dyspnea
   Aspiration
   Dysphagia
   Otalgia (ear pain), and
   Hemoptysis
Examples of malignant throat tumors
Cancer of the larynx
Cancer of the larynx accounts for approximately half of all head
and neck cancers.
Almost all malignant tumors of the larynx arise from the surface
epithelium and are classified as squamous cell carcinoma.
                              105
Laryngeal carcinoma mainly affects the          glottic region
accounting for 60%, supraglottic 35% and the subglottic 5%.
Its mode of spread is mainly by direct spread and lymphatic
spread according to the regions ie supraglottic, glottic and
subglottic
Risk factors of cancer of larynx
These include
   Male gender
   Age 60 to 70 years
   Tobacco use (including smokeless
   Excessive alcohol use
   Vocal straining
   Chronic laryngitis
   Occupational exposure to carcinogens
   Nutritional deficiencies (riboflavin), and
   Family predisposition.
Clinical Manifestations
 Early symptoms include;
 Hoarseness (Dysphonia) with cancer in glottic area
 Harsh, raspy, low-pitched voice
                              106
 Persistent cough
 Pain and burning in the throat when drinking hot liquids
 Lump is felt in the neck.
 After metastasis symptoms include:
 Dysphagia
 Dyspnea
 Unilateral nasal obstruction or discharge
 Persistent hoarseness or ulceration
 Foul breath
 Enlarged cervical node
 Weight loss
 General debilitated state
 Pain radiating to the ear
 Haemoptysis
Investigations / diagnosis
   History and physical examination of the head and neck to r/o
     neck lumps
                               107
   Laryngeal biopsy to confirm the diagnosis
   Neck CT scan to confirm the diagnosis r/o laryngeal
     complications and neck involvement
   Plain chest x ray to r/o chest involvement
Management
The goals of treatment of laryngeal cancer include cure,
preservation of safe effective swallowing, preservation of useful
voice, and avoidance of permanent tracheostoma.
Treatment options include;
   Surgery
   Radiation therapy
   Chemotherapy
   Combination therapy
   Speech therapy eg esophageal speech, artificial larynx
     (electrolarynx), or tracheoesophageal puncture.
Surgery
Depending on the location and staging of the tumor, four
different types of laryngectomy (surgical removal of part or all
of the larynx and surrounding structures) are considered:
   Partial laryngectomy
                               108
This is recommended in the early stages of cancer in the glottic
area when only one vocal cord is involved
   Supraglottic laryngectomy
This is indicated in the management of early (stage I)
supraglottic and stage II lesions, and the hyoid bone, glottis, and
false cords are removed.
   Hemilaryngectomy
This is performed when the tumor extends beyond the vocal
cord but is less than 1 cm in size and is limited to the subglottic
area.
   Total laryngectomy plus tracheostomy
This is performed in the most advanced stage IV laryngeal
cancer, when the tumor extends beyond the vocal cords, or for
recurrent or persistent cancer following radiation therapy.
 In total laryngectomy, laryngeal structures are removed,
including the hyoid bone, epiglottis, cricoids cartilage, and two
or three rings of the trachea.
Staging of the tumours:
This is mainly based on TNM classification, to standardize
treatment method and to report the treatment results.
• Primary Tumours (T):
                                 109
   Tx: Primary tumour can't be assessed.
   T0: No evidence of primary tumour.
   T is: Carcinoma in situ
   T1: Tumour limited to one site with normal vocal cord
    mobility.
   T2: Tumour extending to more than one site with normal
    vocal cord mobility.
   T3: Tumour limited to larynx with vocal cord fixation.
   T4: Tumour extending beyond the larynx.
• Lymph Nodes (N):
   N0: No clinically positive nodes.
   N1: Single clinically positive ipsilateral node 3 cm or less in
    diameter.
   N2: Single clinically positive ipsilateral node more than 3
    cm but less than 6 cm in diameter.
   N3: Ipsilateral nodes equal to 6cm in diameter or bilateral
    or contralateral nodes. (of any size).
• Distant Metastasis (M):
   M0: No evidence of distant metastasis.
   M1: Tumour with distant metastasis.
                               110
Post operative management of the patient after total
laryngectomy and permanent tracheostomy
Aims
   To relieve symptoms that may occur during the post
    operative period
   To prevent complications that may occur during the post
    operative period
   To promote quick recovery of the patient
On Ward
                               111
 After operation, the ward nursing team is informed and two
  nurses go to theatre to collect the patient and while in
  theatre they will;
 Receive a verbal report from the anesthetist concerning the
  general condition of the patient, any post medication and the
  type of anesthesia given.
 Also receive post operative instructions from the ENT
  surgeon concerning the general management of the patient
  during the post operative period and the type of
  tracheostomy tube used (either cuffed or non cuffed).
 Observe the patient for breathing by passing the back of the
  palm near the patients nose and also the chest movement.
 Observe the urinary catheter if present for drainage and the
  drainage for colour and amount and maintain a temperature
  chart
 Observe the tracheostomy tube to ensure that its in situ and
  is held in position by tapes tied at the sides of the patients
  neck and the cuff is inflated
 Observe the NGT to ensure that its in situ
                                  112
 Take vital observations and maintain an observation chart
  and when satisfied, they will then transfer the patient to the
  ward for further management post operatively with one
  nurse in front ensuring a patent air way while the other
  behind maintaining privacy and warmth.
In ward
                              113
 Proper positioning of the NGT to avoid the patient from
  sleeping on it and irritation of the gut
 Observation of the tracheostomy tube to ensure that its in
  situ and properly held in position by the tapes tied around
  the patients neck to ensure its not tied too tight.
 Observation of the wound dressing for bleeding and in case
  more sterile gauze is added to arrest bleeding and
  maintained in situ by strapping
 Inflation of the tracheostomy tube if cuffed to minimize
  pressure on tracheal wall
 Administration of oxygen to ensure a patent air way and ease
  breathing
 Suction of secretions if present to ensure a patent air way,
  ease breathing, and avoid blockage of the air way and
  aspiration.
 Administration of iv fluids (Normal saline / 5% Dextrose) as
  prescribed to ensure fluid and electrolyte balance
 Administration of analgesics as prescribed to relieve pain
  such as pethidine 100mg and maintain treatment chart
                                114
 Taking of vital   observations as ordered and maintain a
  temperature chart
                               115
 IM pethidine 100mg alternating with iv paracetamol 1g three
  times daily for 3days
 IV fluids, Normal saline alternating with 5% Dextrose 3 litres
  in 24 hours.
 Oxygen therapy 4  6 litres
                                116
 The tapes holding the tracheostomy tube in position are
  changed whenever soiled with clean ones to avoid skin
  irritation and sepsis or as ordered by the ENT surgeon
 The tracheostomy tube is sucked as ordered to clear out the
  secretions present along the air way to ensure a patent air
  way and ease patient breathing.
 The inner tube is removed prn or as ordered, cleaned with
  sodium bicarbonate or savlon and reinserted back into the
  tracheostomy tube properly.
 If the tracheostomy tube is cuffed, its observed regularly ,
  released and inflated prn as ordered by the surgeon
 The tracheostomy tube is permanently maintain in position
  as ordered by the ENT surgeon
                              117
Elimination
   Bladder care
 A urinary catheter present is maintained in situ for
  continuous bladder drainage throughout the recovery period
  and urine in the urine bag is observed for color, smell and
  amount and a fluid balance chart is maintained. After
  recovery a urinary catheter is removed as ordered by the
  ENT surgeon and is offered a bed pan (female) or urinal
  (male) prn to open the bladder and any abnormality
  detected is noted and reported throughout the post
  operative period.
   Bowel care
 After recovery, the patient is offered a bed pan prn to open
  the bowel and stool is observed for colour, smell, texture and
  amount and any abnormality detected is noted reported to
  the ENT surgeon throughout the post operative period.
Diet
Hygiene
Physiotherapy
                               119
  exercises and neck and head rotation, shoulder exercises to
  prevent respiratory, circulatory complications and neck
  muscle rigidity.
Advice on Discharge
                               120
 To come back for review on the date prescribed on the
  discharge form.
 To always eat a light well balanced diet
 To come back as early as possible in cases of any early neck
  complication.
 To avoid heavy lifting on the head until fully recovered
 To continue caring for the trachestomy tube and the stoma
  to avoid sepsis
 To continue with regular exercises
 To avoid alcohol consumption and smoking
 To always to go or come back for radiation therapy and
  chemotherapy prn
                               121
   Tracheal crusting
Staging of cancer of larynx
This is mainly based on the TNM system
T  Tumor
There are 5 main T stages for cancer of the larynx and these
include;
                              122
 T4  Tumour has grown into body tissues outside the larynx
  and has spread to the thyroid gland, windpipe (trachea) or
  food pipe (oesophagus).
N  Nodes
There are 4 main N stages for cancer of the larynx and these
include;
 N2b  Cancer cells have spread in more than one lymph node
  on the same side of the neck as the cancer and all are smaller
  than 6cm across.
                              123
 N2c  Cancer cells have spread to the lymph nodes on both
  side of the neck from the cancer and all are less than 6cm
  across.
M  Metastasis
TUMORS OF NASOPHARYNX
These are tumors which affects the lower part of the nasal cavity
and the upper part of the pharynx
These may either be benign or malignant tumors
Benign tumor in the nasopharynx
 Nosapharayngeal Angiofibroma
This is the commonest benign tumour of the nasopharynx
common in males only at the age 10-20 years originating from
                                124
the periosteum of the roof of nasopharynx or margin of the
sphenopalatine foramen in the posterior part of lateral nasal
wall.
                             Nasopharyngeal Angiofibroma
Clinical features
 Nasal obstruction
 Epistaxis
 Tinnitus
 Hearing loss
 Facial swelling
 Diplopia( double vision)
 Proptosis (down ward displacement of the eye ball resulting
  into amass within the orbital cavity)
Investigations / diagnosis
 CT scan or MRI to detect and reveal the nature and size of
  the tumor in the nasopharynx and to r/o complications
                               125
 Management
   Surgery mainly excision to remove the tumor, Transnasal
    endoscopic excision, transpalatal, lateral rhinotomy or
    mid-facial degloving approach,
Malignant tumors of the nasopharynx
These include;
 Nasopharyngeal carcinoma
 Lymphomas mainly non - Hodgkin lymphoma
 Chondroma
Risk factors for nasopharyngeal carcinoma
   Ingestion of salted fish
   Excessive alcohol consumption
   Cigarette smoking
   Inhalation of industrial smoke and chemicals
   Virus eg Epstain barr virus and HPV
Clinical features
 Epistaxis
 Nasal obstruction
 Discharge from the nose
 Hearing loss
                               126
 Tinnitus
 Otitis media
 Horseness
 Facial pain
 Altered sensation of the face
Diagnosis / investigations
   Facial CT scan / MRI to confirm the diagnosis
Management
 Surgery
 Radiation therapy
 Chemotherapy
Tumors of the Laryngopharynx (Hypopharyngeal Tumors)
Benign tumors in this region are rare and the malignant tumor
which is very common is the squamous cell carcinoma
Risk factors of hypopharyngeal tumors
These include;
   Cigarette smoking
   Excessive alcohol consumption
   Viruses eg Epstein Barr virus and HPV infection.
Clinical features
                              127
These include;
 Dysphagia
 Disphonia / hoarseness
 Reffered ear pain (otalgia)
 Weight loss
 Enlarged neck nodes
 Airway obstruction
Investigations
These include;
 Barium swallow to r/ o any obstruction along the
  laryngopharynx
 Neck and chest x  ray to detect and reveal the size of the
  heart and paratracheal regions due metastasis
 Neck CT MRI scan to confirm the diagnosis and r/o neck
  complications due to metastasis
Management
 Surgery
 Radiation therapy
 Chemotherapy
                                128
DISORDERS OF THE EYE
Terms used in ophthalmology
Accommodation
This is a process by which the eye adjusts for near distance (eg,
reading) by changing the curvature of the lens to focus a clear
image on the retina
Anterior chamber:
This is a space in the eye bordered anteriorly by the cornea and
posteriorly by the iris and pupil
Aphakia
This is absence of the natural lens
Astigmatism
This is a refractive error in which light rays are spread over a
diffuse area rather than sharply focused on the retina caused by
differences in the curvature of the cornea and lens
Binocular vision
                                129
This is normal ability of both eyes to focus on one object fusing
the two images into one
Blindness
This is inability to see defined by a corrected visual acuity of
20/400 or less, or a visual field of not more than 20 degrees in
the better eye
Chemosis
This is edema of the conjunctiva
Cones
These are retinal photoreceptor cells essential for visual acuity
and color discrimination
Diplopia
This is seeing one object as two or double vision
Emmetropia
This is absence of refractive error
Enucleation
This is the complete removal of the eye ball and part of the optic
nerve
Exenteration
This is the surgical removal of the entire contents of the orbit,
including the eyeball and lids
                                 130
Evisceration
This is the removal of the intraocular contents through a corneal
or scleral incision but the optic nerve, sclera, extraocular
muscles, and the cornea are left intact
Hyperemia
This is red eye resulting from dilation of the vasculature of the
conjunctiva
Hyperopia
This means far sightedness (a refractive error in which the focus
of light rays from a distant object is behind the retina)
Hyphema
This means blood in the anterior chamber
Hypopyon
This is collection of inflammatory cells that has the appearance
of a pale layer in the inferior anterior chamber of the eye
Injection
This means congestion of blood vessels
Keratoconus
This is cone-shaped deformity of the cornea
Limbus
This is a junction of the cornea and sclera
                                 131
Myopia
This means near sightedness (a refractive error in which the
focus of light rays from a distant object is anterior to the retina)
Nystagmus
This is involuntary oscillation of the eyeball
Papilledema
This is swelling of the optic disc due to increased intracranial
pressure
Photophobia
This is ocular pain on exposure to light
Posterior chamber
This is a space between the iris and vitreous
Proptosis
This is downward displacement of the eyeball resulting from an
inflammatory condition of the orbit or a mass within the orbital
cavity
Ptosis
This is drooping of the eyelid
Rods
This is a retinal photoreceptor cells essential for bright and dim
light
                                 132
Scotomas
These are blind or partially blind areas in the visual field
Strabismus
This is a condition in which there is deviation from perfect
ocular alignment
Trachoma
This is a bilateral chronic follicular conjunctivitis of childhood
that leads to blindness during adulthood, if left untreated
Vitreous humor
These are gelatinous material (transparent and colorless) that
fills the eyeball behind the lens
                                    133
  pink eye) because of the sub conjunctival blood vessel
  hemorrhages
 Conjunctivitis may be unilateral or bilateral, but the infection
  usually starts in one eye and then spreads to the other eye
  by hand contact
Causes
Its caused by;
 Bacteria eg chlamydia
 Virus
 Fungi and parasites
 Eye trauma by chemicals or foreign bodies
 Smoke or irritating toxic stimuli into the eye
 Allergy
 Pre existing ocular infection
Clinical features of conjunctivitis
 Watery discharge from the eye (viral or chemicals)
 Pus discharge from the eye (bacteria)
 Cornea is clear and does not stain with fluorescein
 Visual acuity is normal
                                  134
 Redness (usually both eyes but may start/be worse in one
  usually reddest at outer edge of the eye)
 Swelling and itching of the eye
 Photophobia
 Scratching or burning sensation of the eye
Types of conjunctivitis
 Conjunctivitis is classified according to its cause and these
include;
Bacterial conjunctivitis
  • This is commonly caused by bacteria eg staphylococcus
     aureus,   streptococcus    pneumonia      and   Hemophilic
     influenza and may be acute or chronic
  • Staphylococcus aureus is the most common cause in
     adults
  • Its highly contagious from secretions or with contaminated
     objects and surfaces.
                               135
  •    It lasts for 1 - 2 weeks and then it usually resolves
      spontaneously
Signs and symptoms / clinical features of bacterial
conjunctivitis
  • Eye redness and discharge which may be bilateral.
  • The affected eye often is stuck shut in the morning
  • Purulent eye discharge throughout the day
  • Thick eye discharge which may be yellow, white or green
  • Eye irritation, itching and discomfort
  • Normal eye vision
  • Purulent discharge at the lid margins and in the corners of
      the eye
  • Eye redness due to dilatation of superficial blood vessels
  • Edema of the conjunctiva (chemosis)
  • Swelling of the eyelids
  • Corneal opacity if the cornea is involved
Viral conjunctivitis
 • This is a highly contagious type of conjuctivitis spread by
      direct contact with the patient and his or her secretions or
      with contaminated objects & surface
                                136
  • The common causative organisms are adenovirus and
      herpes simplex virus
  • It usually presents with extreme tearing, watering or
      watery discharge, photophobia, eye irritation, lid edema,
      ptosis conjunctival hyperemia      and foreign body sensation
Allergic conjunctivitis
  • This is a type of conjunctivitis caused by air borne allergy
      contacting the eye.
                                  137
  • It is common in patients with history of an allergy to
     pollens and other environmental allergens.
  • It is more common in children and young adults and the
     most affected individuals have a history of asthma or
     eczema.
Signs and symptoms / clinical features include;
  • Epiphora (ie, excessive secretion of tears)
  • Severe photophobia
  • Reddening of the eye
  • Severe and persistent itching of both eyes
  • Stringlike mucoid eye discharge
  • No visual reduction
  • Visual Acuity is normal
Chemical conjunctivitis
This is a type of conjunctivitis that may result from medications,
chlorine from swimming pools, exposure to toxic fumes among
industrial workers, or exposure to other irritants such as smoke,
hair sprays, acids, and alkalis.
Neonatal Conjunctivitis (Ophthalmia Neonatorum)
                                   138
   This is conjunctivitis in a newborn within the first 28 days
     of life
Etiology / causes
   Its caused by bacteria mainly gonococcus and chlamydia
     resulting into profuse thin to thick purulent eye discharge
Clinical presentations
  • Purulent eye discharge
  • Swelling of the eye lids
  • Ulcer and scarring of the eye if cornea is involved
Prevention
  • Clean the eye lids with saline swabs as soon as the head is
     born and before the infants eyes open.
  • Apply Tetracycline eye ointment routinely whenever there
     is a risk that the mother had these infections during
     pregnancy.
Investigations
 Clinical features are diagnostic
 Pus swab for culture and sensitivity to identify and confirm
  the causative micro oraganism
Management
                               139
Infective conjunctivitis
 Instill chloramphenicol or gentamicin eye drops 2 or 3 hourly
  for 2 days then reduce to 1 drop every 6 hours for 5 days
 Change treatment as indicated by results of culture and
  sensitivity where possible
Allergic conjunctivitis
 Apply cold compresses to the eyes
 Facial hygiene by thorough face washing with clean water
  and soap
 Instill betamethasone or hydrocortisone eye drops every 1-2
  hours until inflammation is controlled then apply 2 times
  daily
Viral conjunctivitis
 Viral conjunctivitis is not responsive to any treatment but
  may be managed by
 Applying cold compresses to the eye to alleviate some
  symptoms
 Proper hand hygiene mainly handwashing
 Avoiding sharing hand towels, face cloths, and eye drops.
Chemical conjunctivitis
                               140
 For conjunctivitis caused by chemical irritants, the eye must
  be irrigated immediately and profusely with saline or sterile
  water.
Note
 NB. Gonococcal conjunctivitis should be treated aggressively
  and in line with management of Sexually Transmitted
  Infections
Prevention
 Proper personal hygiene by daily face washing using clean
  water
 Avoid irritants and allergen
STYE (HORDEOLUM)
This is a localized infection of the hair follicle of the eyelids
Cause
 Bacteria mainly staphylococcus aureus
Clinical features
 Eye itching in the early stages
 Swelling of the eye
 Eye pain
 Eye tenderness
                                 141
 Pus formation
 May burst spontaneously
Differential diagnosis
 Other infections of the eyelids
 Blepharitis
Management
 Usually it heal spontaneously
 Avoid rubbing the eye as this might spread the infection
 Apply a warm / hot compress to the eye
 Apply tetracycline eye ointment 1% 2-4 times daily until
  symptoms disappear
 Remove the eye lash when it is loose
 Give analgesics to relieve pain eg tablets ibuprofen 400mg
  tds for 5 days
                               142
 Give oral antibiotic if severe eg caps flucamox 500mg qid for
  5 days
 I &D of pus if present
Prevention
 Remove any loose eyelashes
 Good personal hygiene
 Early detection and medical intervation
Common ocular surgeries
These include
  • Enucleation
  • Exeteration
  • Evisceration
Enucleation
 This is the removal of the entire eye and part of the optic
  nerve.
 It may be performed for the following conditions:
  • Severe injury resulting in prolapse of uveal tissue or loss of
    light projection or perception
                               143
  • An irritated, blind, painful, deformed, or disfigured
    eye,usually caused by glaucoma, retinal detachment, or
    chronic inflammation
  • An eye without useful vision that is producing or has
    produced sympathetic ophthalmia in the other eye
  • Intraocular tumors that are untreatable by other means
Evisceration
  • This is the surgical removal of the intraocular contents
    through an incision or opening in the cornea or sclera.
  • The optic nerve, sclera, extraocular muscles, and
    sometimes, the cornea are left intact.
  • The main advantage of evisceration over enucleation is
    that the final cosmetic result and motility after fitting the
    ocular prosthesis are enhanced
  • Its main disadvantage is the high risk of sympathetic
    ophthalmia
Exenteration
  • This is the removal of the eyelids, the eye, and various
    amounts of orbital contents.
                               144
  • It is indicated in malignancies in the orbit that are life
    threatening or when more conservative modalities of
    treatment have failed or are inappropriate.
  • An example is squamous cell carcinoma of the paranasal
    sinuses,   skin,   and   conjunctiva    with   deep   orbital
    involvement.
  • In its most extensive form, exenteration may include the
    removal of all orbital tissues and resection of the   orbital
    bones.
TRACHOMA
 This is a chronic infection of the outer eye caused by
  Chlamydia trachomatis
 It is transmitted through direct personal contact, shared
  towels and cloths, and flies that have come into contact with
  the eyes or nose of an infected person.
 Its a disease of poor hygiene and poverty
 It is a common cause of blindness if not treated
Cause of trachoma
 Its caused by bacteria mainly chlamydia trachomatis
Clinical features
                              145
In early stages symptoms include;
 Reddening of eye
 Discharge from the eye
 Itching of the eye
 Photophobia
 Ocular pain
 Follicles (grain-like growth) on conjunctival
 Decreased visual acuity
 In case of repeated untreated infections or late symptoms
include;
 Scar formation on eyelids causing the upper eyelid to turn
  inwards (entropion) and the eyelashes to scratch the cornea
 Scarring of the cornea leading to blindness
 Corneal opacities in older children and adults
Investigations
No investigation is required and done
WHO grading of trachoma
TF  At least five follicles in the upper tarsal conjunctiva,
Indicates active disease and need for treatment
TI  Intense inflammation, need for urgent treatment
                               146
TS  Scarring stage, old infection now inactive
TT Trachoma trichiasis, needs surgical treatment
CO  Corneal opacities. Visual loss from previous infection
Differential diagnosis
 Allergic conjunctivitis (chronic)
 Other chronic infections of the eye
Management
 Apply tetracycline eye ointment 1% twice daily for 4-6 weeks
  (until the infection / inflammation has disappeared)
 Give erythromycin 500 mg every 6 hours for 14 days or
  azithromycin 500mg once daily for 3  5 days.
 Regular washing of the face
 Good water and sanitation
 If there is any complications refer for specialist management
  and surgery of the entropion
GLAUCOMA
Key facts
                                147
 Glaucoma is a group of disorders characterized by loss of
    visual field associated with cupping of the optic disc and
    optic nerve damage. or
 Its a group of ocular conditions characterized by optic nerve
    damage related to IOP caused by congestion of aqueous
    humor in the eye.
 In the past, it was seen more as a condition of elevated
    intraocular pressure (IOP) than of optic neuropathy.
 Glaucoma is the second leading causes of blindness among
    adults
 There is no cure for glaucoma, but the disease can be
    controlled.
    It is not one disease but rather group of disorders
    characterized by; increased intraocular pressure and the
    consequences of elevated pressure, optic nerve atrophy and
    peripheral visual
 The term glaucoma refers to a group of disorders such as:
 Primary open angle glaucoma (POAG): Is chronic or simple
    usually caused by obstruction in the trabecular meshwork.
                                148
 Secondary open angle glaucoma (SOAG): Occur from an
  abnormality in the trabecular meshwork or an increase in
  venous pressure.
 Primary angle-closure glaucoma (PACG): Narrow angle,
  acute PACG outflow impaired as a result of narrowing or
  closing of angle between iris and cornea.
 Secondary angle-closure: results from ocular inflammations,
  blood vessel changes and trauma.
 Congenital glaucoma: Is an abnormal development of
  filtration angle, can occur secondary to other systemic eye
  disorders.
NB: The normal balance of production and drainage of aqueous
humor allows IOP to remain relatively constant within the
normal range of 10 to 21 mm Hg with a mean pressure of 16
mm Hg.
Etiology or causes of glaucoma
 Blockage and poor drainage of aqueous humuor from the
  anterior chamber of the eye
                                149
 Raised or elevated intraocular pressure (IOP) inside the eye.
  (It can also occur when this pressure is within the normal
  range)20
A proper balance between the rate of aqueous production
(inflow) and the rate of aqueous reabsorption (outflow) is
essential to maintain the IOP within the normal limits.
Risk factors for glaucoma
   Family history of glaucoma
   Race (African American race)
   Older age above 40 years
   Diabetes
   Cardiovascular disease
   Migraine syndromes
   Near or short sightedness (myopia)
   Eye trauma
   Prolonged use of topical and systemic corticosteroids
   Raised intra-ocular pressure
   Central corneal thickness
Classification of Glaucoma
   Open angle glaucoma
                                150
   Angle closure glaucoma (also called pupillary block)
   Congenital glaucoma and glaucoma associated with other
     conditions.
• Glaucoma can be primary or secondary, depending on
  whether associated factors contribute to the rise in IOP.
• The two common clinical forms of glaucoma encountered in
  adults are primary open angle glaucoma (POAG) and angle-
  closure   glaucoma,      which     are   differentiated   by   the
  mechanisms that cause impaired aqueous outflow.
• Primary open-angle glaucoma is the most common.
Types of glaucoma
 Open angle glaucoma
This is usually bilateral, but one eye may be more severely
affected than the other.
In all the three types of open-angle glaucoma, the anterior
chamber angle is open and appears normal
Types of open angle glaucoma
These include;
   Chronic open-angle glaucoma (COAG)
   Normal tension glaucoma
                               151
   Ocular hypertension
 Closed angle glaucoma
This is due to obstruction in aqueous humor outflow due to
complete or partial closure of the angle from the forward shift of
the peripheral iris to the trabecula which results into an
increased IOP
Types of angle closure glaucoma
These include;
   Acute angle-closure glaucoma (AACG)
   Sub acute angle-closure glaucoma
   Chronic angle-closure glaucoma
 Congenital glaucoma
This is an abnormal development of filtration angle.It can occur
secondary to other systemic eye disorders.
Stages of glaucoma
Regardless of the cause of damage, glaucomatous changes
typically evolve through clearly discernible stages:
   Initiating events
                                152
This is the first stage of glaucoma and its precipitating factors
include illness, emotional stress, congenital narrow angles, drugs
(ie long-term use of corticosteroids.
These events lead to the second stage.
   Structural alterations in the aqueous outflow system
During this stage tissue and cellular changes caused by factors
that affect aqueous humor dynamics lead to structural and
functional alterations.
   Functional alterations
During this stage conditions such as increased IOP or impaired
blood flow create functional changes that lead to optic nerve
damage.
   Optic nerve damage
This is characterized by loss of nerve fibers and blood supply
hence visual loss
   Visual loss
This is characterized by visual field defects.
Clinical features of glaucoma
Open angle glaucoma
   Mostly asymptomatic
                                153
   History of gradual loss of vision in affected eye or loss of
    visual field
   Often suspected after seeing cupping of optic disc on
    routine fundoscopy or finding elevated intra-ocular
    pressure on screening
Angle-closure glaucoma
   Sudden onset of severe eye pain and redness, associated
    with nausea, vomiting and headache
   Difficulty adjusting of the eyes in low lighting
   Loss of vision in the affected eye
   Coloured halos or bright rings around lights
   Hazy-looking cornea
   Fixed or semi-dilated pupil
   Shallow anterior chamber
   Severely elevated IOP. (When palpated with a finger, the
    affected eye feels hard, compared to the other eye)
   If IOP rises more slowly, the patient may be asymptomatic
    with gradual loss of vision
   Permanent blindness due to marked increase in IOP for 24
    to 48 hours.
                                  154
Congenital Glaucoma
   Enlargement of the eye
   Lacrimation
   Photophobia
   Blepharospasm
Investigations
These include:
   Visual acuity measurement with the snellens chart
   Tonometry to measure IOP of the eye
   Tonography to estimate the resistance in the outflow
    channels by continuously recording the IOP for over 2 to 4
    minutes
   Ophthalmoscopy to evaluate the color and configuration
    of the optic cup or to inspect the optic nerve
   Visual field permietry to measure the visual function in the
    central field of vision or for visual field assessment.
   Gonicoscopy: to examine the angle structures of the eye,
    where the iris, ciliary body and cornea meet.
Management
                               155
 The aim of treatment is to arrest / delay progress of the
  disease rather than visual improvement ie to prevent optic
  nerve damage and therapy is usually life long
 Angle-closure glaucoma is a medical emergency that requires
  urgent reduction of intra ocular pressure
 Management is both medical and surgery
Medical Treatment
Open-angle glaucoma
 Instill Timolol 0.5% eye drops 1 drop to the eye12 hourly
  daily for 7 days
Angle-closure glaucoma (acute)
 Administer mannitol 20% IV to reduce raised IOP
 Give tablets acetazolamide 500 mg single dose followed by
  250 mg every 6 hours to decrease aqueous humor
  production and reduce intraocular pressure
 Instill timolol 0.5% eye drops 1 drop 12 hourly daily on the
  eye to decrease aqueous humor production
Surgical management
This is indicated when conservative treatments fail to control the
IOP and they include;
                               156
 Argon laser trabeculoplasty (ALT) or laser trabeculoplasty
   Here laser burns are applied to the inner surface of the
      trabecular meshwork to open the intratrabecular spaces
      and widen the canal of Schlemm, thereby promoting
      outflow of aqueous humor hence decreasing the IOP
   The procedure is indicated when IOP is inadequately
      controlled by medications
   It is contraindicated when the trabecular meshwork
      cannot be fully visualized because of narrow angles.
     its complication is a transient rise in IOP (usually 2 hours
      after surgery) that may become persistent.
 Trabeculectomy with or without filtering implant.
This is a standard filtering technique used to remove part of the
trabecular meshwork.
Its complications include
   Hemorrhage
   An extremely low (hypotony) or elevated IOP
   Uveitis
   Cataracts
   Bleb failure
                                157
   Bleb leakage
   Endophthalmitis
 Laser iridotomy for pupillary block glaucoma
This is an opening made in the iris to eliminate the pupillary
blockage
It is contraindicated in patients with corneal edema, which
interferes with laser targeting and strength.
Its potential complications include;
 Burns to the cornea, lens, or retina
 Transient elevated IOP
 Closure of the iridotomy (Pilocarpine is usually prescribed to
  prevent closure of the iridotomy)
 Uveitis and blurring.
 Cyclocryotherapy; to destroy the ciliary body.
 Filtering procedures for chronic glaucoma
   These are used to create an opening or fistula in the
     trabecular meshwork to drain aqueous humor from the
     anterior chamber to the subconjunctival space into a bleb,
     thereby bypassing the usual drainage structures.
                                158
   This allows the aqueous humor to flow and exit by
     different routes (ie, absorption by the conjunctival vessels
     or mixing with tears).
 Drainage implants or shunts
   These are open tubes implanted in the anterior chamber
     to shunt aqueous humor to an attached plate in the
     conjunctival space.
   A fibrous capsule develops around the episcleral plate and
     filters the aqueous humor, thereby regulating the outflow
     and controlling IOP.
Caution
 Avoid timolol eye drops in patients with asthma, heart block
and uncontrolled heart failure
                              161
                       Corneal abrasions
                       Conjunctival swelling
                       Sub conjunctival
                          haemorrhages
Anterior chamber,      Decreased visual acuity (this
lens, vitreous or         is an indication that the
retina                    injury involved either the
                          anterior chamber, lens,
                          vitreous, or retina).
                       Poor vision
                       Blindness
Orbital bones          Orbital      bone     fractures.
                          (Commonest is a fracture of
                          the ethmoid bone).
                       Swelling of the eye
                       Sunken or retracted eyeball
                          (depending on the site of
                          the fracture)
                       Double vision (Diplopia)
                    162
                                  Proptosis     if    there    is
                                     haemorrhage in the orbit
Management
 Assess the visual acuity, and if this is normal and there are no
  signs / symptoms of orbital bone fracture;
  • Instill or apply antibiotic eye drops or ointments eg
     Gentamicin or chloramphenicol eye drops or tetracycline
     eye ointment
  • Give tablets Paracetamol 1g tds to relieve pain for 3-5 days
  • Apply cold compress to avoid lid swelling
 If the visual acuity is poor, pad the eye, give a pain reliever
  and refer urgently the patient to a specialist as this is an
  indication of injury to deeper structures
Complications of blunt eye injuries
 Hyphema
  • This is presence of blood in the anterior chamber.
  • Its treated by putting the patient in a semi sitting up
     position and early referral to the ophthalmologist for
     specialized management
                               163
 Rupture of suspensory ligaments. (This leads to the
  dislocation of lens)
 Delayed cataract (due to concussion damage of lens cells)
 Concealed eyeball rupture
                                164
 All perforations of the cornea or sclera are serious injuries
  and may lead to blindness.
 Apply an eye shield to protect the eye from direct light
 Give a pain reliever eg tablets paracetamol 1g or im
  Diclofenac 75mg to control pain and refer the patient
  immediately to an Ophthalmologist
 At secondary or tertiary level, treatment of corneal / scleral
  lacerations is immediate repair with 10/0 sutures under an
  operating microscope, or if the laceration is extensive, an
  immediate evisceration of the eye is performed
Complication of penetrating eye injuries
   Corneal scar
   Cataract
   Endophthalmitis (intra ocular infection)
 Chemical Injuries to the Eye
 Various chemicals may injure the eye when they come into
  contact with the eyes or face.
 The commonest are acidic and alkaline chemical products.
 Acidic and Alkaline chemical products cause serious injuries
  to the eye lids, cornea, and conjunctivae.
                               165
Management
First aid
 On exposure to acid or chemical products, immediately
  irrigate the eyes with copious amounts of water to reduce
  its effect on the eye
At health facility
 On arrival at a medical centre, continue irrigation of the eye
  with normal saline to wash out the entire chemical
 After irrigating of the eye, apply tetracycline eye ointment,
  pad the eye, and refer to an ophthalmologist immediately
  for further management
 In case of tear gas, irrigate the eyes with plenty of water
  since tear gas injury is usually short lived and does not
  usually require treatment
 Thermal injury
 This is either due to direct burn from curling iron, or other
  hot surface or indirect burn from ultraviolet light (e.g.
  welding), sun ultraviolet burns from excessive sun exposure
  (eg skiing, outdoor work, or sunbathing) or and use of heat
  lamps and tanning beds.
                              166
 Foreign Body in the Eye
This is the presence of an external object or substance in the eye.
FB in the eye is the most common eye injury and can be on the
conjunctiva or cornea
Conjunctival foreign body
 Its mostly found on the upper tarsal conjunctiva
 It is good to check for FB by everting the upper eye lid
 Needs illumination and remove it by a cotton tip from the
  eye
 Irrigate the eye with normal saline or tap water if foreign
  body cannot be traced in the eye
Corneal foreign body
 It can be on the surface or embedded in the cornea of the
  eye
 Patient complains of pain and foreign body sensation within
  the eye
 Use adequate light to visualize it on the cornea
Causes
 It may be accidental and the FB may be;
   Solids such as dust, insects, metal or wood particles
                                167
   Liquids such as splashes of irritating fluids or chemical
Clinical features
 Severe eye pain
 Eye tearing
 Eye redness
 Foreign body (FB) may be visible
 Inability to open the eye
 Feeling of something in the eye which may be irritating
 Photophobia
 Irregular pupil
 Sub conjunctival haemorrhage
Differential diagnosis
 Other injury or trauma
Management
 Make a thin finger of moistened cotton wool, move eyelid
  out of the way, and gently remove FB from the eye if visible
 If this fails, apply tetracycline eye ointment 1%, pad the eye
  and refer to the Eye Specialist for further management
 In case of irritating fluids in the eye, wash the eye with plenty
  of clean water or normal saline
                                168
 If the cornea is damaged, apply tetracycline eye ointment
  1%, cover or pad the eye, and refer to the Eye Specialist for
  further management
 Give tablets paracetamol 1g three times daily to relieve pain
Prevention of eye injuries
In the hospital
This is by;
 Reading instructions carefully before using cleaning fluids,
  detergents, ammonia, or harsh chemicals and wash hands
  thoroughly after use.
 Wearing special goggles to shield your eyes from fumes and
  splashes when using powerful chemicals.
 Use of opaque goggles to avoid burns from sunlamps
 Avoiding praying with sharp objects such as surgical blades,
  needles, used syringes etc
In and Around the House
This is by;
 Making sure that all spray nozzles are directed away from
  you before you press down on the handle.
                               169
 Reading instructions carefully before using cleaning fluids,
  detergents, ammonia, or harsh chemicals and wash hands
  thoroughly after use.
 Using grease shields on frying pans to decrease spattering.
 Wearing special goggles to shield your eyes from fumes and
  splashes when using powerful chemicals.
 Using opaque goggles to avoid burns from sunlamps.
In the Workshop
This is by;
 Protecting your eyes from flying fragments, fumes, dust
  particles, sparks, and splashed chemicals by wearing safety
  glasses
 Reading instructions thoroughly before using tools and
  chemicals, and follow precautions for their use
Around Children
This is by;
 Paying attention to the age and maturity level of a child
  when selecting toys and games by avoiding projectile toys,
  such as darts and pellet guns
                              170
 Supervising children when they are playing with toys or
  games that are dangerous
 Teaching children the correct way to handle potentially
  dangerous items, such as scissors and pencils
In Sports
This is by;
   Wearing protective safety glasses, especially for sports
     such as racquetball, squash, tennis, baseball, and
     basketball
   Wearing protective caps, helmets, or face protectors
     especially during sports such as ice hockey.
Around Fireworks
This is by;
   Wearing eye glasses or safety goggles
   Not using explosive fireworks.
   Not allowing children to ignite fireworks.
   Not standing near others when lighting fireworks.
CATARACT
Key facts
                               171
 This is the opacity or cloudiness of the lens inside the eye
 Cataracts can develop in one or both eyes and at any age.
 It is the most common cause of blindness in Uganda.
Causes of cataract
These include:
   Overproduction of oxidants, which are oxygen molecules
     that have been chemically altered due to normal daily life
   Smoking
   Long-term use of steroids and other medication
   Certain diseases, such as diabetes, hypoparathyroidism etc
   Trauma to the eye
   Radiation therapy and Ultraviolet radiation
   Congenital
   Other eye disorders eg uveitis, glaucoma, retinitis
     pigmentosa, or detached retina.
Risk factors
 Old age
 Sex (slightly common in female than male)
 Diabetes (high blood sugar)
 Certain drugs e.g. corticosteroids
                                172
 Eye injuries eg blunt and penetrating trauma
 Cigarette smoking
 Ultraviolet light and ionizing radiation exposure
 Obesity
 Family history of cataract
 Heavy use of alcohol
Types of Cataracts
There are different types of cataracts and are classified basing on
where and how they develop in the eye
Nuclear cataract
 This forms in the middle of the lens and causes the nucleus
  or the center to become yellow or brown.
Cortical cataract
 These are wedge-shaped and form around the edges of the
  nucleus.
Posterior capsular cataract
 This form is faster than th e other two types and affects the
  back of the lens.
Congenital cataract
                                173
 This is present at birth, where some babies are born with
  cataract or develop it in childhood and often affects both
  eyes.
 They may be so small that they do not affect vision but if
  they do, the lenses may need to be removed.
Secondary cataract
 This is caused by disease or medications such as glaucoma,
  diabetes and uveitis, use of the steroid eg prednisone
Traumatic cataract
 This develops after an injury to the eye eg foreign body allow
  aqueous or vitreous humor to enter the lens capsule..
Radiation cataract
 This occurs after radiation treatment for cancer or exposure
  to some types of radiation.
Clinical features
   Reduced vision
   Pupil is not a normal black colour but is grey, white,
    brown, or reddish in colour
   Condition is not painful unless caused by trauma
   Eye is not red unless condition is caused by trauma
                                174
   Light scattering leading to reduced contrast sensitivity,
      sensitivity to glare, and reduced visual acuity.
   Myopic shift (return of ability to do close work [eg, reading
      fine print] without eye glasses)
   Astigmatism
   Monocular diplopia (double vision)
   Brunescens (ie, color values shift to yellow-brown)
     Reduced light transmission.
Investigations
The diagnostic tests of cataract include the following:
 Visual acuity test using an eye chart to measures how well a
  patient see at various distances
 Ophthalmoscopy (direct or indirect).
 Snellen visual acuity test
 Slit lamp biomicroscopic examination (are used to establish
  the degree of cataract formation)
Management
Management       may    involve     both   medical   and   surgical
management
Medical management
                                  175
 No non surgical treatment cures cataracts or prevents age-
  related cataracts thus therefore refer the patient to the eye
  specialist(ophthalmologist) for further management
 Use of glasses or contact, bifocal, or magnifying lenses which
  may improve vision.
 Reassurance of the client
Surgical Management
 In general, if reduced vision from cataract does not interfere
  with normal activities, surgery may not be needed.
 In deciding when cataract surgery is to be performed, the
  patients functional and visual status should be a primary
  consideration.
 Surgical options include;
• Phacoemulsification (method of extracapsular cataract
  surgery and removal of the lens)
This method of extracapsular surgery uses an ultrasonic device
that liquefies the nucleus and cortex, which are then suctioned
out through a tube but the posterior capsule is left intact.
                                 176
• Lens replacement eg (aphakic eyeglasses, contact lenses, and
  intraocular lens implants).     After removal of the crystalline
  lens, the patient is referred to as aphakic (ie, without lens)
                                 177
   Acute bacterial endophthalmitis: caused by Staphylococcus
     epidermitus, S. aureus, Pseudomonas and Proteus species
   This is characterized by marked visual loss, pain, lid
     edema, hypopyon, corneal haze, and chemosis
Late Postoperative Complications
   Suture-related problems
   Malposition of the IOL(intraocular lens)
   Chronic endophthalmitis (severe chronic inflammation
     involving both the anterior and posterior segments of the
     eye after intraocular surgery)
   Opacification of the posterior capsule (most common late
     complication of extracapsular cataract extraction)
These may result from toxic reactions or mechanical injury from
broken or loose sutures, results in astigmatism, sensitivity to
glare, or appearance of halos, persistent, low-grade inflammation
and granuloma and visual acuity is diminished.
PAEDIATRIC CATARACT
Cataract in children is unique as it may interfere with the normal
development of vision resulting in lazy eye (amblyopia).
                               178
Causes
   Hereditary/genetic disorders
   Intrauterine infections (TORCHES)
   Drugs
   Trauma
   Metabolic diseases e.g. Diabetes
   Unknown
Symptoms
   A white pupil
   Older children may complain of poor vision
   Dancing eyes (nystagmus), squints
Investigations
If at HC2 or HC3 reassure patient and refer to hospital
Management
 Condition is managed surgically under general anaesthesia
 Surgery can be done as early as one month of age
 Patching/occlusion therapy in case of lazy eyes (amblyopia)
 Aphakic children /those less than one year who are not
  implanted should be given aphakic glasses or contact lenses
Prevention
                               179
 Wear      protective   goggles     when   hammering,   sawing,
  chopping, grinding, etc.
 Caution children playing with sticks about risk of eye injuries
Pre and post operative management after cataract surgery
(brain storm)
CORNEAL ULCERS
This is the pitting of the cornea caused by bacteria, viruses,
fungi and or protozoan or sometimes from injury
This is an emergency
Causes
   Bacteria eg staphylococci, pneumococci
   Viruses
   Fungi
   Foreign body lodged in the eye
   Vitamin A and protein deficiency
Clinical features
 Eye pain
 Sensitivity to light / photophobia
 Reduced vision
 Increased tear production / lacrimation
                               180
 Pus discharge may appear on the cornea
 Reddening of the eye
Complications of corneal ulcers
   Impaired vision and scaring
   Perforation of the cornea
   Displacement of the iris
   Destruction of the eye
   Deep seated infection
Management
   Apply eye drops
   Use antibiotics
   Surgery
KERATITIS
This is the inflammation of the cornea.
Causes
 Infection eg bacterial, viral, or fungal infections leading to
  corneal ulceration
 Trauma by Chemical, foreign bodies
Clinical features
                                181
 Redness and tearing of the eye
 Fear of light / photophobia
 Cornea is not clear and will stain with fluorescein in the case
  of corneal ulcer (pattern of staining depends on the causative
  agent, for example dendritic in viral keratitis)
 Visual acuity is usually reduced
 Condition is often unilateral
 The eye is painful
Investigations (where facilities are available)
 Full ocular examination to r/o ocular abnormality
 Fluorescein stain to confirm diagnosis
 Pus swab for gram stain, culture and sensitivity to identify
  and confirm the causative micro organisms
 Corneal scraping for microscopy, culture and sensitivity to
  detect for and confirm the causative micro oraganism
Management
 Admit the patient on eye ward
 If the cause is bacterial, apply gentamicin eye drops
  alternately with chloramphenicol eye drops 12 hourly until
  infection is controlled
                                  182
 If viral, acyclovir eye ointment 5 times daily for herpes
  simplex and viral keratitis
 If fungal, natamycin ophthalmic suspension 5% or econazole
  eye drops
 Apply Atropine eye drops to relieve pain
 Give Vitamin A capsules for children
 Surgery i.e. conjunctival flap and tarsorrhaphy
 Debridement (chemical/ mechanical)
Orbital Cellulitis
This is a sudden acute inflammation of the tissues around the
eye.
Causes
The cause is mainly bacteria by haemophilus influenza in
children leading to post sinus infection and Staphylococcus
aureus, Streptococcus pneumonia in adults
Risk factors
 Sinus infection
 Tooth extraction
 Orbital trauma
Clinical features
                                183
 Painful swelling of the eye
 Pain in the eye especially on eye movements
 Decreased vision
 Fever and headache
Investigations
 Good history and physical examination
Management
   This is an emergency and needs immediate referral to the
    ophthalmologist
Prevention
 Prompt treatment of sinus and dental infections
 Complete immunization schedule for children, more
    especially Hib vaccine (included in the pentavalent DPT/
    HepB/Hib vaccine)
                                184
     the esophagus, perforate the mediastinum, or erode into
     the great vessels in later stages.
Causes of Ca esophagus
   Gender (male).
   Race (African American).
   Age (greater risk in fifth decade of life).
   Geographic locale (much higher incidence in China and
     northern Iran).
   Chronic esophageal irritation.
   Use of alcohol and tobacco.
   Gastroesophageal reflux disease (GERD).
   Chronic ingestion of hot liquids or foods
   Nutritional deficiencies,
   Poor oral hygiene
   Exposure to nitrosamines in the environment or food
                                185
   Ca esophagus in early stages is largely asymptomatic
   Patient usually presents with an advanced ulcerated lesion
    of the esophagus
   Dysphagia
   Odynophagia (steady, dull, substernal pain)
   Regurgitation first with solid foods and eventually liquids.
   Feeling of a lump in the throat and painful swallowing
   Heartburn
   Anorexia
   Hemorrhage
   Weight loss.
Types of Ca esophagus
Adenocarcinoma
                               186
 It occurs anywhere in the oesophagus and is associated with
  smoking, alcohol intake, diet poor in fresh fruit and
  vegetables, chronic achalasia etc
Investigations
                               187
   Radiotherapy
   Chemotherapy
   Palliative therapy to maintain esophageal patency by
     dilation of the esophagus using a stent, balloon etc
Complications of Ca esophagus
   Hemorrhage (may occur if the cancer erodes through the
     esophagus and into the aorta.
   Esophageal perforation with fistula formation into the lung
     or trachea
   Esophageal obstruction due to enlargement of the tumor.
CANCER OF THE CERVIX
Causes of Ca cervix
                                189
 Chronic cervical infection
 HIV infection
Clinical Manifestations
 Cervical cancer is often asymptomatic in early stages
 Irregular or intermittent      vaginal bleeding after sexual
  intercourse or douching
 Watery, dark and foul smelling vaginal discharge because of
  necrosis and infection of the tumor
 Irregular vaginal bleeding between periods or after
  menopause after mild trauma ie (intercourse, douching, or
  defecation)
 Lower abdominal pain on palpation
 Enlargement of the uterus on bimanual examination
 Cervical lesions like cervical ulcerations or necrotic tissues or
  polypoid mass on speculum examination
 Thick,   hard    and    irregular   septum    on    rectovaginal
  examination
 Rectal bleeding following rectal involvement
 Edema of the extremities following metastasis
                                190
 Excruciating pain in the back and legs due to nerve
  involvement
 Anemia following
Investigations
   Ureteral stricture
   Bladder dysfunction
   Constipation
                              191
   Altered sexual function secondary to a shortened vagina
   Dyspareunia
   Psychological factors eg depression
   Vaginal stenosis
   Fistula formation
Stage Characteristics
  0    Carcinoma in situ, cervical intraepithelial lesion (CIN) 3
  I    Carcinoma is strictly confined to cervix (extension to
       corpus should be disregarded)
                                192
Stage Characteristics
 IA Invasion is limited to measured stromal invasion with a
       maximum depth of 5 mm and no wider than 7mm
IA1 Measured invasion of stroma no greater than 3 mm in
       depth and no wider than 7 mm
IA2 Measured invasion of stroma greater than 3 mm and no
       greater than 5 mm in depth and no wider than 7mm
 IB Clinical lesions confined to the cervix or preclinical
       lesions greater than IA
 IB1 Clinical lesions not greater than 4 cm in size
 IB2 Clinical lesions greater than 4 cm in size
  II   Carcinoma extends beyond cervix but has not extended to
       pelvic wall; it involves vagina, but not as far as the lower
       third
 IIA No obvious parametrial involvement
 IIB Obvious parametrial involvement
 III Carcinoma has extended to the pelvic wall; on rectal
       examination there is no cancer-free space between tumor
       and pelvic wall; tumor involves lower third of vagina; all
                                 193
Stage Characteristics
       cases with hydronephrosis or nonfunctioning kidney
       should be included, unless they are known to be due to
       another cause
 IIIA No extension to pelvic wall, but involvement of lower
       third of vagina
 IIIB Extension    to    pelvic    wall,   or   hydronephrosis    or
       nonfunctioning kidney due to tumor
 IV Carcinoma has extended beyond true pelvis or has
       clinically involved mucosa of bladder or rectum
 IVA Spread of growth to adjacent pelvic organs
 IVB Spread to distant organs
194