Pedia Tricks 4ed
Pedia Tricks 4ed
r   Anniversa
                                                                                                                                           r
                                                                                                                      Y
               Edition
                                                                                                                                            y
                                                                                                                               Fully
Tenth
                                                                                                                                               Ed
                                                                                                                              Revised
                                                                                                                                                ition
                                                                                                                                   4  th
                             Scott's PEDIA-TRICKS
Scott's Edition
                                                    PEDIA-TRICKS
Written by the Students, for the Students
                                                                           Julius Scott
                                                                      Srinivasa Raghavan R
                                                                     CONTENTS
  Dedication .................................................................................................................................................................. v
  Foreword to the fourth edition ............................................................................................................................... vii
  Preface to fourth edition .......................................................................................................................................... ix
  Foreword to the first edition .................................................................................................................................... xi
  Preface to the first edition...................................................................................................................................... xiii
  Contributors ............................................................................................................................................................. xv
                                                                  SECTION A: GENERAL
 1. Exam cases ............................................................................................................................................................ 3
 2. Some tips/ tricks for the exam preparation ............................................................................................................. 6
 3. History taking ....................................................................................................................................................... 12
 4. Nutrition history .................................................................................................................................................... 34
 5. Pedigree charts ..................................................................................................................................................... 38
 6. Assessment of development ................................................................................................................................. 41
 7. General examination ............................................................................................................................................. 48
 8. Abdomen examination .......................................................................................................................................... 82
 9. Cardiovascular system examination ..................................................................................................................... 99
10. Respiratory system examination .......................................................................................................................... 111
11. Neurological examination ................................................................................................................................... 118
                                                                  SECTION B: SYSTEMS
12. Neonatology ........................................................................................................................................................ 167
Cardiovascular system
13. Cardiovascular system disorders ........................................................................................................................ 205
Respiratory system
14. Bronchiectasis in children ................................................................................................................................... 242
15. Pleural effusion ................................................................................................................................................... 247
16. Pulmonary tuberculosis in children ..................................................................................................................... 252
Renal system
17. Nephrotic syndrome ........................................................................................................................................... 260
18. Post-infectious glomerulonephritis (PIGN) ......................................................................................................... 268
Abdomen
19. Approach to a child with fever and hepatosplenomegaly ................................................................................... 274
20. Afebrile hepatosplenomegaly without pallor/ jaundice/ hematemesis ................................................................. 287
21. Cirrhosis/Chronic liver disease and ascites ........................................................................................................ 291
22. Extra-hepatic portal venous obstruction (EHPVO) in children .......................................................................... 305
23. Neonatal cholestasis ........................................................................................................................................... 310
Neurology
24. Cerebral palsy ..................................................................................................................................................... 318
25. Post-meningitis/ post-encephalitis sequelae ........................................................................................................ 335
26. Acquired paraplegia - AFP, transverse myelitis, compressive myelopathy ........................................................ 346
27. Stroke in children ................................................................................................................................................ 371
28. Clinical approach to a child with neurodegenerative disorders including neuro Wilson ...................................... 379
29. Sub-acute sclerosing pan-encephalitis (SSPE) ................................................................................................... 391
30. Ataxia in children ................................................................................................................................................ 393
31. Approach to a floppy infant ................................................................................................................................ 398
32. Approach to a child with muscular dystrophy .................................................................................................... 402
33. Peripheral neuropathies ...................................................................................................................................... 410
34. Chorea ................................................................................................................................................................ 413
35. Facial palsy ......................................................................................................................................................... 417
36. Microcephaly, craniosynostosis .......................................................................................................................... 422
37. Macrocephaly, hydrocephalus ............................................................................................................................ 424
Nutrition
38. Undernutrition in children ................................................................................................................................... 430
39. Vitamin A deficiency........................................................................................................................................... 441
40. Breastfeeding ..................................................................................................................................................... 443
Genetics
41. Essential genetics for exams .............................................................................................................................. 450
42. Down syndrome ................................................................................................................................................. 457
43. Inborn errors of metabolism ............................................................................................................................... 461
 Endocrinology
44. Short stature ....................................................................................................................................................... 474
45. Rickets ................................................................................................................................................................ 487
46. Congenital hypothyroidism .................................................................................................................................. 493
Hematology
47. Afebrile hepatosplenomegaly with pallor - hemolytic anemias ........................................................................... 501
48. Iron deficiency anemia ....................................................................................................................................... 512
49. Immune thrombocytopenic purpura (ITP) .......................................................................................................... 517
50. Approach to a child with lymphadenopathy ........................................................................................................ 521
51. Bleeding in children ............................................................................................................................................ 524
52. FAQs in Thalassemia major ............................................................................................................................... 527
Infections
53. Skin infections and infestations ........................................................................................................................... 532
54. Diarrhea .............................................................................................................................................................. 535
55. Fever with rash in children ................................................................................................................................. 543
Rheumatology
56. Approach to arthritis in children ......................................................................................................................... 550
Social programs
57. Social pediatrics: Various national programs for the welfare of children ........................................................... 556
                                                                SECTION C: VIVA VOCE
SECTION D: MISCELLANEOUS
       The fourth edition of Scott’s Pedia-tricks continues in its tradition of being an essential resource, for both
undergraduate and postgraduate students in their preparation for the clinical examination. The huge success of the previous
editions had given us a responsibility to deliver a book that would live up to the student’s expectations. This edition hence
has been thoroughly updated, and edited to keep up with the growing data.
       We live in the age of information. Almost anything can be learnt at the comfort of our study room. The internet has
made lives simpler by making knowledge accessible to everyone. With the advent of smartphones, access to information
has been made even simpler. It is no exaggeration to say that the world is in our hands. Any information is just a click
away. Yet, there is still a place for a good book. The very advantage of the internet can be its disadvantage as well - the
volume of information that is made available. It is difficult for a student to sift through the huge amount of data to find out
the information that he needs. Hence, a good book that provides the apt information is invaluable for the students preparing
for the exam. Often these days you may hear people saying - “The art of clinical medicine is becoming extinct”. These
aspects played on our mind when we set out to prepare this edition. During preparation of this edition, we wanted to ensure
that the book is comprehensive yet concise and student friendly, incorporating both the new advances and the time-
honored vintage art of clinical medicine that had been taught to us by the stalwarts of the previous generation. Hence you
may note that the contributors are a mix of both junior pediatricians as well as experts.
       All the chapters have been thoroughly edited. Many chapters have been re-written totally. Must-know areas that
are considered as high-yield have been highlighted in green boxes. Nice-to-know category information has been highlighted
in yellow boxes. We feel this would help the students during a quick revision. To facilitate the student to answer questions
during the case discussion, relevant theory concepts have also been included in all the chapters. Model case sheets and
question bank sections have been revamped. We have also included simple flow charts and tables where ever relevant for
easier understanding. This book will help the students not only for their exams but also for their day to day work in the
hospital.
       We thank all the contributors who have helped us realize this endeavour. We also thank all the expert reviewers who
have given their time and have taken pain-staking effort to go through all the chapters and have given their valuable
feedback. We are blessed to have such stalwarts as our guides and well-wishers. We also thank all our students who were
the driving force behind the book.
     We sincerely hope this edition is useful to the students at large. We would love to hear your feedback about this
endeavour.
This much awaited “clinically oriented” and “student focused” 4th edition of Dr. Julius Scott’s
Pedia-Tricks is getting released by Paras Medical Books and there is absolutely no doubt in my
mind that it will go out of print within a few weeks after its release. Professor Julius Scott has
identified and roped in Dr. Srinivasa Raghavan as his associate editor, an able and competent
young pediatrician who shares the same degree of eagerness and enthusiasm to motivate young
generation and pass on and share unreservedly their knowledge and clinical skills in assessment,
management, communication and documentation. This team has identified other academically
competent and active, meritorious young contributors who have made themselves known to their
students as effective teachers and clinical trainers in their respective institutions and regions. The
result is obvious.
The initial few pages give relevant preparatory tips and tricks to tackle theory, clinical and oral
examinations. Whatever essential areas have to be emphasized in terms of history taking in various
clinical fields, clinical examination and assessment of a child’s (Neonates to Adolescents) status of
growth and development, nutrition, hydration, airway, breathing, circulation, integrity and functioning
of various organ systems, including genetic and immunological systems - are all appropriately
tailored and proportioned to the needs of the students with clinical examination oriented case
scenarios. Many new features and additions have been incorporated keeping in mind the needs of
examination going students in nutrition, genetics, inborn errors of metabolism, current emerging
infections, growth and development and other systemic disorders (GIT & Hepatobiliary, CNS,
Renal, Respiratory, Cardiovascular, Nutrition, Endocrinology, Preventive and Social Pediatrics).
The commonly asked questions in clinical bedside rounds, clinical, oral and OSCE examinations by
faculty, seasoned examiners and in quiz competitions are all appropriately answered. Even some
of the personalized, individualistic and idiosyncratic questions which are often used as trump cards
are given due attention. The book will be useful as an instant resource material even for well-
informed teachers and trainers to refer and re-equip themselves before lectures or clinical
discussions.
Reading this edition will definitely be a pleasurable experience to students who want to equip
themselves with essentials of pediatrics. The book will ensure their success, not only in examinations
but also in the delivery of meaningful professional health care to children. Whatever little margin of
profit that is accrued in the sales of this edition is going to help needy children get free anti-cancer
drugs, iron chelators, anti-hemophilic factor and anti-rejection drugs. My earnest request is not to
photocopy this well compiled and meticulously prepared book. My best wishes to all the students
who have rightly chosen this book as their essential companion for their academic progress and
professional success.
                                                                Dr. S. Srinivasan
                                                                Former Director-Professor of Pediatrics
                                                                JIPMER, Pondicherry
                                                                India
               Section - A: General
                                                                                                      CHAPTER
                                                                                                                                 7
                                                  General Examination Dr. Peter Prasanth
CHAPTER - 7
              48                                                   Scott’s Pedia-Tricks
                                                                                                       7. General Examination
                                                                                                                                        CHAPTER - 7
How to feel the pulse:                                                  Auscultation should be performed in this area, as well.
The radial pulse is felt by the index (studies the artery),          g. Popliteal - Flex knee before palpating. In midline, on
middle (measures the volume), and the ring finger (used to              popliteal side of lower end of femur. Alternative method:
obliterate the pulse) (photos)                                          Doctor’s one hand on patient’s knee, other hand under
                                                                        knee. Push flexed knee downwards [into extension] until
Surface anatomy of pulses                                               can feel popliteal.
a. Radial - Palmar side of wrist, between flexor carpi               h. Posterior tibial - Posterior, inferior to medial malleolus,
   radialis tendon and radius. The child’s forearm should be            between flexor digitorum longus and flexor hallucis
   supported in one of the examiner’s hands and his other               longus. Posterior tibial lies just posterior to the medial
   hand used to palpate along the radialvolar aspect of the             malleolus. It can be felt most readily by curling the fingers
   subject’s forearm at the wrist. This can best be done by             of the examining hand anteriorly around the ankle, indenting
   curling the fingers around the distal radius from the dorsal         the soft tissues in the space between the medial malleolus
   toward the volar aspect, with the tips of the first, second,         and the Achilles tendon, above the calcaneus. The thumb
   and third fingers aligned longitudinally over the course of          is applied to the opposite side of the ankle in a grasping
   the artery.                                                          fashion to provide stability. Again, obesity or edema may
b. Brachial - Cubital fossa, medial to biceps tendon. The               prevent successful detection of the pulse at the location.
   examiner supports the child’s forearm in his left hand,           i. Dorsali spedis - Lateral to extensor hallucis longus, over
   with the subject’s upper arm abducted, the elbow slightly            tarsal bones. This is examined with the child in the
   flexed, and the forearm externally rotated. The examiner’s           recumbent position and the ankle relaxed. The examiner
   right hand is then curled over the anterior aspect of the            stands at the foot of the examining table and places the
   elbow to palpate along the course of the artery just medial          fingertips transversely across the dorsum of the forefoot
   to the biceps tendon and lateral to the medial epicondyle            near the ankle. The artery usually lies near the center of
   of the humerus. The position of the hands should be                  the long axis of the foot, lateral to the extensor hallucis
   switched when examining the opposite limb.                           tendon but it may be aberrant in location and often
c. Carotid - Just lateral to upper border of thyroid cartilage.         requires some searching. This pulse is congenitally absent
   Use index and middle fingers to feel the carotid pulse.              in approximately 10% of individuals.
   Caution: Do not palpate both the carotids at the same time.       1. RATE
d. Superficial temporal - Anterior to ear as crosses                    Count for one full minute (except during resuscitation) to
   temporal bone’s zygomatic process.                                   avoid missing an arrhythmia. A fast heart rate is called
e . Abdominal aorta - In midline, at umbilicus pressing into            tachycardia. A heart rate that’s too slow is called
    abdomen (Use caution if large aortic artery aneurysm to             bradycardia.
    avoid rupture). The abdominal aorta is an upper                  Table 7.1: Normal Heart Rate by Age (beats/minute)
    abdominal, retroperitoneal structure which is best palpated                 Reference: PALS Guidelines, 2015
    by applying firm pressure with the flattened fingers of
                                                                        Age                     Awake Rate     Sleeping Rate
    both hands to indent the epigastrium toward the vertebral
    column. For this examination, it is essential that the child’s      Neonate (<28 day)       100-205        90-160
    abdominal muscles be completely relaxed; such relaxation            Infant (1 mon -1 yr)    100-190        90-160
    can be encouraged by flexing the hips and by providing a
                                                                        Toddler (1-2 yr)        98-140         80-120
    pillow to support the head of the child. In extremely obese
    individuals or in those with massive abdominal                      Preschool (3-5 yr)      80-120         65-100
    musculature, it may be impossible to detect aortic                  School-age (6-11 yr)    75-118         58-90
    pulsation. Auscultation should be performed over the aorta
                                                                        Adolescent (12-15 yr)   60-100         50-90
    and along both iliac vessels into the lower abdominal
    quadrants.
                                                           Scott’s Pedia-Tricks                                                    49
               Section - A: General
                     slowly, or erratically.
                   • It is important to take the pulse for one minute.            Slurred gradual systolic upstroke      Absent dicrotic notch
                                                                                           Pressure (mmHg)
                   • An irregular pulse may be due to sinus arrhythmia,
                     ectopic beats, atrial fibrillation, paroxysmal atrial                                   90
                     tachycardia, atrial flutter, partial heart block etc.
Time
                                                                                                                         Fig. 7.3
                                                                                    B . Dicrotic
                                          Fig. 7.1                                       • A single pulse wave with one peak in systole and
                   • Intermittent dropping out of beats at pulse is called                 one peak in diastole
                     “intermittent pulse”. Examples of regular intermittent              • Due to very low stroke volume and decreased
                     (regularly irregular) pulse include pulsus bigeminus,                 peripheral resistance
                     second-degree atrioventricular block. An example of
                                                                                         • Causes: Left ventricular failure, dilated
                     irregular intermittent (irregularly irregular) pulse
                                                                                           cardiomyopathy, cardiac tamponade.
                     is atrial fibrillation.
                                          Fig. 7.2
              3. VOLUME
                 Palpation should be done using the fingertips and intensity
                 of the pulse graded on a scale of 0 to 4 +:0 indicating no
                 palpable pulse; 1 + indicating a faint, but detectable pulse;
                 2 + suggesting a slightly more diminished pulse than
                 normal; 3 + is a normal pulse; and 4 + indicating a bounding
                 pulse.
                 Hypokinetic pulse                                                                                       Fig. 7.4
                 • Small weak pulse
                 • Small volume and narrow pulse pressure
                 • Causes: Shock and cardiac failure, mitral stenosis
                     and aortic stenosis
                 Hyperkinetic pulse
                 • High amplitude pulse with a rapid rise
                 • Large volume with wide pulse pressure
                 • Causes: High output states, mitral regurgitation,
                     Ventricular septal defect
              50                                                      Scott’s Pedia-Tricks
                                                                                                                                   12. Neonatology
SECTION - B : SYSTEMS
                                                                                                                                                                C H A P T E R - 12
                                                                                 38. Undernutrition in children ................................ 430
15. Pleural effusion ................................................. 247       39. Vitamin A deficiency ......................................... 441
16. Pulmonary tuberculosis in children .................. 252                    40. Breastfeeding ................................................... 443
Renal system                                                                    Genetics
17. Nephrotic syndrome ......................................... 260             41. Essential genetics for exams ............................ 450
18. Post-infectious glomerulonephritis (PIGN) ...... 268                         42. Down syndrome ............................................... 457
Abdomen                                                                          43. Inborn errors of metabolism ............................ 461
19. Approach to a child with fever and hepato-                                   Endocrinology
    splenomegaly ................................................... 274         44. Short stature ..................................................... 474
20. Afebrile hepatosplenomegaly without pallor/                                  45. Rickets ........................................................... 487
    jaundice/ hematemesis .................................... 287
                                                                                 46. Congenital hypothyroidism .............................. 493
21. Cirrhosis/Chronic liver disease and ascites ....... 291
                                                                                Hematology
22. Extra-hepatic portal venous obstruction (EHPVO)
                                                                                 47. Afebrile hepatosplenomegaly with pallor - hemolytic
    in children ......................................................... 305
                                                                                     anemias 501
23. Neonatal cholestasis ........................................ 310
                                                                                 48. Iron deficiency anemia ..................................... 512
Neurology
                                                                                 49. Immune thrombocytopenic purpura (ITP) ....... 517
24. Cerebral palsy ................................................... 318
                                                                                 50. Approach to a child with lymphadenopathy ... 521
25. Post-meningitis/ post-encephalitis sequelae ... 335
                                                                                 51. Bleeding in children ........................................... 524
26. Acquired paraplegia - AFP, transverse myelitis,
                                                                                 52. FAQs in Thalassemia major .............................. 527
    compressive myelopathy .................................. 346
                                                                                Infections
27. Stroke in children .............................................. 371
                                                                                 53. Skin infections and infestations ....................... 532
28. Clinical approach to a child with neurodegenerative
    disorders including neuro Wilson ..................... 379                   54. Diarrhea 535
29. Sub-acute sclerosing pan-encephalitis (SSPE) . 391                           55. Fever with rash in children ................................ 543
30. Ataxia in children .............................................. 393       Rheumatology
31. Approach to a floppy infant ............................. 398                56. Approach to arthritis in children ....................... 550
32. Approach to a child with muscular dystrophy . 402                           Social programs
33. Peripheral neuropathies ................................... 410              57. Social pediatrics: Various national programs for the
                                                                                     welfare of children ............................................ 556
34. Chorea ........................................................... 413
                                                                               CHAPTER
                                                                                                          12
                                                 Neonatology                                      Dr. Umamaheswari B
                                                                                                  Dr. Abiramalatha T
                                                                                                                              C H A P T E R - 12
Additional topics that may be discussed are:                  Corrected gestational age (in preterms)
                                                                                                                              C H A P T E R - 12
    - On exclusive breast feeds
                                                              • Normal range for term newborn infants
    - Weight loss within normal limits
                                                              Table 12.1:
    - Immunization done with BCG/ OPV/ HBV
                                                              Vital sign        Normal range
    - Screening (hearing, thyroid, etc.) results
                                                              Temperature       36.5-37.5oC
Examination                                                   Heart rate        120-160/ minute
Includes the following sub-headings:                          Respiratory rate 40-60/ minute
• General examination                                         Blood pressure    Mean BP should be above the corresponding
• Vital signs                                                                   gestational age. Example: For a baby born
                                                                                at 35 weeks, mean BP should be >35 mmHg.
• Anthropometry
• Gestational age assessment                                  • Temperature - Must be measured in the axilla, using a
                                                                digital thermometer. Most examiners will not accept the
• Head to foot examination                                      statement ‘baby is normothermic’.
• Systemic examination
General Examination
• Sensorium
Baby’s sensorium can be best described by Prechtl
Neurobehavioral state
Table 12.2:
 Neurobehavioral state        Eyes open/closed     Extra-ocular movements      Respiration      Limb movements
State         Description
1             Quiet sleep     Closed               Absent                      Regular          Absent
2             Active sleep    Closed               Present                     Irregular        Present
3             Awake, calm     Open                 Absent                      Regular          Absent
4             Awake, active   Open                 Present                     Irregular        Present
5             Fussy, crying                                  Crying
                                                              20
                                      Afebrile Hepatosplenomegaly
                                                                                      CHAPTER
                                                                                                                                  C H A P T E R - 20
the family and with associated coarse facies or skeletal or         mucopolysaccharoidoses
neurological involvement.                                         • Neoplasms: Hemangioma, hamartoma, leukemia
Splenomegaly:                                                     • Connective tissue disorders: Juvenile rheumatoid arthritis,
                                                                    SLE
Spleen has to enlarge thrice for it to become palpable. Thus,
a palpable spleen always indicates splenomegaly, unlike liver.    Causes of predominant hepatomegaly:
In newborns though spleen is normally felt 1-2 cm below           1. Infection - this subgroup is dealt with in fever with HSM
costal margin.                                                       chapter
Grading of splenomegaly: Hackett’s semi quantitative              2. Inflammation - this subgroup is dealt with in Fever with
assessment:                                                          HSM chapter
Table 20.1:
                                                                  3. Congestive causes
   Grade         Class     Palpation                                 • Cardiac failure
   Mild          0         Not palpable even on deep                 • Budd Chiari syndrome
                           inspiration
                 1         Palpable below costal margin
                                                                  4. Infiltration
                           on deep inspiration                       • Hemochromatosis
                 2         Palpable but not beyond a                 • Extramedullary hematopoiesis
                           horizontal line halfway between
                                                                     • Leukemia
                           costal margin and umbilicus
   Moderate      3         Palpable more than halfway to             • Lymphomas
                           umbilicus but not below a line            • Primary liver tumors-hepatoblastoma
                           horizontally running through it
                                                                     • Secondaries in liver
   Massive       4         Palpable below umbilicus, but
                           not below a horizontal line half       5. Storage disorders
                           way between umbilicus and pubic           • Glycogen storage disorders, Gaucher’s disease,
                           symphysis                                   Neimann Pick disease, mucopolysaccharoidosis
                 5         Extending below class 4                6. Obstruction
Causes of predominant splenomegaly:                                  • Hepatic vein thrombosis
• Infectious: This subgroup is dealt separately in fever with        • Constrictive pericarditis
  HSM chapter                                                        • Cardiac tamponade
                                                                     • Congenital hepatic fibrosis
• Gangliosidosis:
Table 20.2:
   GM1                                         GM2 (Tay Sachs)                         GM2 (Sandhoff)
   Infancy most common presentation            Infancy                                 Infancy
   Neuroregression                             Neuroregression                         Neuroregression
   Seizures                                    Exaggerated startle reaction-           Seizures
                                                hyperacusis
   Typical facies - broad forehead,            Macrocephaly, ataxia and dysarthria     Similar to Tay Sach but has associated
   depressed nasal bridge, cherry red spot     -juvenile forms, cherry red spot-       splenomegaly
                                               no splenomegaly usually
Gaucher’s disease:
                                                                  • Type B has a variable clinical course. They present in
• Most common lysosomal storage disorder - Variable age             either infancy or childhood with predominant
  of onset- Characterized by multisystemic involvement –            organomegaly, usually splenomegaly is the first to be
                                                                                                                                  C H A P T E R - 20
  hematological, skeletal and visceral.                             detected - May have pulmonary involvement (common
• Three types: Visceral non-neuronopathic (type 1), acute           in older age group) which may progress to life threatening
  neuronopathic (type 2), juvenile neuronopathic (type 3).          bronchopneumonias and cor pulmonale in adults. Liver
                                                                    involvement is so severe to cause cirrhosis, portal
• Clinical features are suggestive of suppression of all three      hypertension and ascites and splenic involvement can be
  cell lines-anemia, bleeding manifestations, fatigue,              as severe as that needing splenectomy for hypersplenism.
  infections; involvement of bone can present as bone pain          CNS is not involved and they have a normal IQ.
  due to fractures or pseudo-osteomyelitits
                                                                  • Type C: Present as neonatal cholestasis - child may
• Examination - Hepatomegaly, splenomegaly or both -                be normal appearing for initial 2 years after which
  consistency of liver/spleen are firm to hard. They are            neuroregression begins. Organomegaly is less severe.
  non-tender with sharp edges
                                                                  • Investigations: Presence of Niemann Pick cells in the
• Associated features: Bone deformitites- Erlenmeyer flask          peripheral smear or bone marrow is diagnostic- Crumpled
  deformity of femur can be seen.                                   tissue paper/ Crumpled silk appearance. For subtype
• Bone marrow- Gaucher cells that stain strongly positive           classification, enzyme analysis is important- type A and
  with PAS are diagnostic                                           B have enzyme levels of 1-10% but type C can have
• Gaucher type 2 and type 3: Neurodegenerative course               normal levels of enzyme.
  with hepatosplenomegaly. Type 2 can have neurogenic             • Treatment of NPD: No treatment is available at present.
  stridor and squint additionally and type 3 can have               Bone marrow transplantation and amniotic cell
  supranuclear gaze palsy, myotonia and dementia.                   transplantation have been tried for type A and B but the
• Treatment is available for Gaucher’s disease - enzyme             has not been a success so far. For type B enzyme
  replacement therapy (cerezyme) which reverses                     replacement therapy is under trial. Prenatal Diagnosis:
  extraskeletal manifestations of the disease- useful in early      it can be done by amniocentesis or chorionic villus biopsy.
  type 1                                                          • Mucopolysachharoidoses: These are progressive
Niemann Pick disease: Three types - Types A, B                      conditions caused by defect in the genes which code for
                                                                    lysosomal enzymes degrading the mucopolysaccharides.
and C
                                                                    Common features of MPS are coarse facies,
• Type A: Usually presents in infancy. Child is apparently          organomegaly (liver and spleen), skeletal involvement with
  normal at birth and acquires milestones appropriately for         central nervous system features - they can also have
  the age. By 8–10 months of age the child starts having            corneal clouding, developmental delay and
  loss of milestones with organomegaly and                          mucopolysacharoiduria. There are different sub-types of
  lymphadenopathy. The disease progresses to death by 3             MPS - Hurler, Hunter, Scheie, Sanfilippo, Morquio,
  years.                                                            Maroteaux-Lamy and Sly.
                                                                                                         CHAPTER
                                                                                                                                  43
                                                                 Inborn Errors of Metabolism
                                                                                                                         Dr. Uma Maheshwari
When to suspect IEM?                                              Eg. Pyruvate dehydrogenase def, pyruvate carboxylase def,
                                                                  mitochondropathy
Advances in diagnostic facilities including Tandem mass
spectrometry (TMS), gas chromatography and mass                   Peroxisomal disorders
spectrometry (GCMS), and high performance liquid                  Presentation: Seizures, hypotonia, dysmorphism, cholestasis,
chromatography (HPLC) increase the chance of detection            renal cysts, ocular abnormalities
of these disorders. It is imperative for the clinicians to
                                                                  Eg. Zellweger syndrome
understand the ways to manifest IEM and when to suspect
these disorders so that appropriate management could be           Lysosomal storage disorders
carried out. It is not only important for the treatment of        Presentation: Presents with hepatomegaly, corneal clouding,
index child (affected child) but also important for predicting    abnormal retinal pigmentary changes
the recurrence risk and genetic counseling as most are            Eg. Mucopolysacchradosis
inherited as autosomal recessive disorder with 25%
recurrence risk.
                                                                  Manifestation of IEM (System wise)
IEM can be broadly classified as:
                                                                  CNS
   1. Disorders that result in toxic accumulation
                                                                  Acute metabolic encephalopathy: Presents with poor
      (Micromolecule like amino acid, organic acid or
                                                                  feeding, lethargy, seizures, coma urea cycle disorder, organic
                                                                                                                                   C H A P T E R - 43
      macromolecule like lysosomal storage disorder)
                                                                  academia, biotinidase deficiency, MSUD.
   2. Disorders of energy production/ utilization
                                                                  Metabolic seizures: Occur with or without
Disorders that result in toxic accumulation                       encephalopathy. Characteristics of isolated metabolic
   • Disorders of protein metabolism (e.g., amino                 seizures include seizures beginning prepartum, refractory
     acidopathies, organic acidopathies, urea cycle defects)      to conventional antiepiletics, progressive worsening clinical
                                                                  and EEG abnormality and EEG indicative of burst
   • Disorders of carbohydrate intolerance                        suppression, pyridoxine dependent seizures, cerebral folate
   • Lysosomal storage disorders                                  deficiency, molybdenum co factor deficiency, sulphite
                                                                  oxidase deficiency, serine synthesis defect.
Disorders of energy production/ utilization
                                                                  Neuroimaging: MRI indicative of brain atrophy, basal
   • Fatty acid oxidation defects
                                                                  ganglia lesions, cyst or dysgenesis and MRI indicative of
   • Disorders of carbohydrate utilization, production (i.e.,     HIE without hypoxic insult at delivery.
     glycogen storage disorders, disorders of gluconeo-
                                                                  Developmental delay: 3-13% of children diagnosed to
     genesis and glycogenolysis)
                                                                  have developmental delay of unknown etiology are found
   • Mitochondrial disorders                                      to have treatable IEM.
   • Peroxisomal disorders                                        Cerebral palsy: Spasticity without evidence of perinatal
The presentations are summarized in the following table:          asphyxia can occur in IEM.
                                                                                                          CHAPTER
                                                                                                                                   44
                                                                          Short Stature
                                                                                                                              Dr Dhivyalakshmi
C H A P T E R - 44
                                                                                CHAPTER
                                                                                                          59
                                                                                        Dr. Lakshmanan Sakthikumar
                                               Radiology                                Dr. Abinaya, Dr Latha M S
                                                                                        Dr. Vilvanathan V
                                                                                                                               C H A P T E R - 59
  the second costal cartilage.
• Zone II - From the 2nd to the 4th costal cartilage
• Zone III - Below the 4th costal cartilage
                                                            FIg. 59.1 Coils of air filled small bowel are seen in the left
The other terms used in a chest x-rays are:                 hemithorax with mediastinal shift to the right, the left dome of
• Opacity (homogenous or heterogeneous)                     the diaphragm is not seen.
• Hyperlucency (mention about lung markings)
• Emphysematous
Always comment on the following:
• Cardiophrenic angle
• Costophrenic angle
• Trachea
• Mediastinal shift
                      FIg. 59.2 X-ray and CT show multiloculated cystic masses with a mediastinal shift
                      Differential Diagnosis includes: Cystic pulmonary airway malformation (CPAM), sequestration, congenital
                      diaphragmatic hernia.
                      BRONCHIECTASIS CT Chest                                             BRONCHIECTASIS
C H A P T E R - 59
FIg. 59.5 Coarse opacities and small circular lucencies are seen
in both the lungs.
PIE is a complication of surfactant deficiency and mechanical
ventilation. In PIE, air dissects into the pulmonary interstitium.
EMPYEMA
                                                                                                                                C H A P T E R - 59
FIg. 59.6 Right hydropneumothorax which was later found to
be empyema                                                           FIg. 59.7 CT and X-ray show the presence of a large lung
Empyema is more common than pleural effusion in children.            abscess
The most common organism is S. aureus and the antibiotic
of choice is cloxacillin.
     Scott's                                                                                                Fully
                                                                                                           Revised
PEDIA-TRICKS 4 th
Edition
Chapters that have been revised and updated New chapters that have been added
  parasredkart .com
             Your online medical books store
                                                                                                www.flipkart.com
ISBN: 9789386480408