Poly pharmacy
Prepard by:
            Group (B2 )
          Head of department
         Dr / Manal Mansor
        Under supervision of
        Dr / Hasnaa Korany
Faculty of Nursing Fayoum University
             2024-2025
                 1
Prepared by:
Mohamed Hesham Attia
Mohamed Youssef Mohamed
Mahmoud Ismail Ramadan
Mahmoud Ragab Ali
Mahmoud Ragab Mahmoud
Mahmoud Saeed Mohamed
Mahmoud Sayed Hassan
Mahmoud Abdel Aati
Mahmoud Ali Abdel Moaty
Mahmoud Qarni Ahmed
Mahmoud Mohamed Abdel Wahid
Mahmoud Mohamed Ajami
Mahmoud Mohamed Mahmoud
Mahmoud Mohamed Mustafa
Mahmoud Mamdouh Haroun
Mukhtar Ayman Mukhtar
Medhat Adel Saad
Marwan Abdel Rahman Helmy
                          2
Marwa Galal Kamel
Marwa Gamal Ahmed
Marwa Saad Aziz
Marwa Mahmoud Hamad
Marwa Masoud Rabie
Maryam Ahmed Abdel Moneim
Maryam Hossam Hussein Maryam
Khaled Salah
Maryam Khairallah Sayed
Maryam Abdel Tawab Abdel Zaher
Maryam Karam Makin
Maryam Magdy Atta
Maryam Mohsen Darwish
Maryam Mahmoud Tawfiq
Maryam Mostafa Kamel
Maryam Nasser Hassan
Mustafa Ahmed Mohamed
Mustafa Gamal Saad
Mustafa Reda Hassan
Mustafa Mohamed Alwani
                          3
Mustafa Mahmoud Ramadan
Moaz Adel Abdel Tawab
Malek Mahmoud Mohamed
Malek Walid Hamdy
Mamdouh Abdel Razek Ali
Manar Ashraf Ali
Manar Gomaa Helmy
Manar Khaled Al-Dawlaty
Outlines:
                          4
Introduction
Definition
Causes
Risk Factors
Signs and Symptoms
Diagnosis
Effective Of Polypharmacy on Elderly
Side Effects Of Polypharmacy on Elderly
Prevention ( First / Second / third )
 Role of geriatric home nursing according to poly
pharmacy
 Nursing care plan of Polypharmacy
Health Education
Reference
Introduction:
                              5
Polypharmacy is a growing concern, especially among
older adults, due to the increasing prevalence of chronic
diseases requiring multiple medications. While
medications play a vital role in managing health
conditions, their excessive use can lead to potential harm
With a significant percentage of older adults taking
multiple drugs daily, balancing effective treatment with
minimizing risks is crucial in healthcare.
Definition:
 Polypharmacy, defined as the regular use of 5 or more
 medications at the same time, is common in older adults
and at-risk younger individuals.
 As aging individuals often contend with multiple chronic
 health conditions, the use of 5 or more medications
 becomes common, posing risks of adverse outcomes
such as falls, frailty, disability, and mortality.
Causes:
1-Multiple Medical Conditions: Older adults with
several chronic diseases often require multiple
medications to
manage each condition.
 2-Multiple Healthcare Providers: Different specialists
may prescribe medications without being fully aware of
what others have prescribed.
                             6
 3-Lack of Communication: Poor communication and
 coordination between healthcare providers, pharmacists,
 and older adults can lead to overlapping or unnecessary
prescriptions.
 4-Self-Medication: Older adults may take over-
 thecounter drugs, supplements, or herbal remedies
 without
consulting their healthcare provider.
5-Aging Population: Older adults are more likely to
have multiple health issues requiring various
medications.
6-Prescription Cascade: This occurs when side effects
of a medication are misinterpreted as a new medical
condition, leading to the prescription of additional
medications.
 7-Dependence on Medications: Some individuals
 rely on medications as a quick solution to health
problems without addressing underlying causes.
 8-Irregular Review of Medications: Failure to
 regularly review medications with a healthcare provider
can result in continued use of unnecessary medications.
 9-Incorrect Prescribing: Medications may be
 prescribed without a true need, leading to an increase in
the number of medications taken.
                             7
 10-Side Effects: Certain medications can cause side
effects that require additional medications to manage.
 Risk Factors:
 Polypharmacy may become problematic in older adults under
these condition:
 1-The presence of multiple medical problems and taking
multiple medication.
 2-Reduced homeostatic mechanisms, due to a decrease
 in physiologic reserve or the presence of organ
dysfunction, especially renal impairment.
 3-The presence of frailty or factors associated with
frailty.
 4-Acute illness or medication changes (including adding
medications or increasing the dose of existing new
medications).
 These factors can lead to problematic polypharmacy in
an adult and should be kept in mind when reviewing a
Older adult‘s medication regimen.
Signs and Symptoms:
 1-Reduced alertness
  2-Confusion or cognitive problems
                              8
  3-Falls and accidents
  4-Weakness and dizziness
  5-Loss of appetite
  6-GI problems such as diarrhea, constipation or
 incontinence 7- Skin rashes
8- Depression
9- Anxiety
10- Excitability
Diagnosis:
 The fact that the elderly take more medications for the
 treatment of several diseases makes them more
 susceptible to the occurrence of adverse reactions.
 Prophylactic actions such as balanced prescriptions are
 vital to reduce the incidence of these reactions and
 prevent longer hospital stay, increased costs and
aggravation of the older adults health condition
 Polypharmacy, generally defined as the concurrent use of
 multiple medications, is a common concern in geriatrics
 due to the unique physiological changes that occur with
 aging, as well as the prevalence of multiple chronic
 conditions among older adults. Diagnosing and
 managing polypharmacy involves several key
considerations:
                             9
1-Definition and Criteria:
 Polypharmacy is often defined as the use of five or
more medications. However, it can also be assessed based
on the appropriateness of the medications rather than just
the number.
 Appropriate Polypharmacy refers to the use of
 multiple medications that are necessary and beneficial
 for the older adult's health conditions, while
 Inappropriate
 Polypharmacy refers to the use of medications that may
not be needed or that pose more risks than benefits.
2-Assessment Tools:
 Medication Review: A thorough review of all
 medications (prescription, over-the-counter, herbal
supplements) is essential.
 Beers Criteria: This tool helps identify potentially
inappropriate medications for older adults.
 STOPP/START Criteria: These criteria help assess       potentially
inappropriate prescriptions and identify
appropriate prescribing for older adults.
                              10
 3-Clinical Evaluation:
  Comprehensive Geriatric Assessment (CGA): This
includes evaluating medical, psychological, and
functional aspects of the older adult’s health.
 Medication History: Gather detailed information about
 all current medications, including indications, dosages,
duration of therapy, and any recent changes.
 Review for Drug Interactions: Assess for potential
drug-drug interactions and adverse effects.
4-Identifying Risks:
 Adverse Drug Reactions (ADRs): Older adults are at
 higher risk for ADRs due to altered pharmacokinetics
and pharmacodynamics.
 Cognitive Impairment: Polypharmacy can contribute
 to cognitive decline or exacerbate existing cognitive
issues.
 Functional Decline: Increased medications can lead to
falls, frailty, and decreased quality of life.
5-Management Strategies:
                             11
 Deprescribing: This involves systematically
discontinuing unnecessary or harmful medications.
 Older adults-Centered Approach: Engage patients in
discussions about their medications, focusing on goals of
care and preferences.
 Regular Follow-Up: Continuous monitoring and
reassessment of medication regimens are crucial.
 6-Education and Communication:
 Educate patients and caregivers about the importance
of medication management and potential side effects.
 Encourage open ommunication regarding any new
symptoms or concerns related to medications.
Effective of poly pharmacy:
 Polypharmacology, the use of multiple medications to
 treat various conditions, is common in elderly
 individuals
                             12
due to the prevalence of multiple chronic diseases.
 While it has potential benefits, it also comes with
significant risks.
Benefits of Polypharmacology in the Elderly:
 1-Comprehensive Disease Management – Helps in
managing multiple chronic conditions like hypertension,
diabetes, and arthritis effectively.
 2-Improved Quality of Life – Proper medication
regimens can enhance mobility, cognition, and daily
functioning.
 3-Reduced Hospitalization Rates – When carefully
managed, polypharmacology can prevent complications
and reduce the need for emergency care.
Risks and Challenges:
  1-Increased Risk of Adverse Drug Reactions (ADRs) –
 The older adults have altered drug metabolism, making
them more prone to side effects.
 2-Drug-Drug Interactions – Multiple medications
 increase the chances of harmful interactions, leading to
toxicity or reduced effectiveness.
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 3-Medication Non-Adherence – Complex regimens can
lead to confusion, missed doses, or overdosing. 4-
Cognitive and Functional Decline – Some medications,
especially sedatives and anticholinergics,
 may contribute to memory loss or falls.
 5-Financial Burden – Polypharmacy can be costly,
leading to financial strain on elderly patients.
Strategies to Optimize Polypharmacology:
 Medication Review – Regular assessment by healthcare
providers to deprescribe unnecessary drugs.
 Personalized Prescribing – Adjusting doses based on
renal and hepatic function
 Use of Medication Management Tools – Pill organizers
and electronic reminders can enhance adherence.
 Older adults and Caregiver Education – Ensuring
 understanding of drug regimens, side effects, and
interactions.
                            14
 While polypharmacology is often necessary for older
 adults, careful management is crucial to balance benefits
 and risks. Regular medication reviews and personalized
 treatment plans can significantly improve outcomes.
Side effect of poly pharmacy:
Multi-Morbidity:
 Aging places individuals at risk of multi-morbidity
(coexistence of 2 or more chronic health conditions) due
to associated physiological and pathological changes and
increases the chances of being prescribed multiple
medications.
Adverse Drug Effects:
 An adverse drug effect (ADE) is an injury from drug use.
 An adverse drug reaction (ADR) is an ADE that refers to
harm caused by a drug at usual dosages.
Drug Interactions:
 Multiple medications increase the potential for drug-drug
 interactions and the prescription of potentially
 inappropriate medications. A drug-drug interaction refers
 to the pharmacologic or clinical response to
                             15
 administering a drug combination that differs from the
 response expected from the known effects of each of
 these 2 agents when given alone. Cardiovascular drugs
are most commonly involved in drug-drug interactions.
Medication Non-Adherence:
 Polypharmacy can lead to problems with medication
 adherence in older adults, especially if associated with
 visual or cognitive decline, associated with aging, and
 resulting in bad outcomes like treatment failure or
hospitalizations.
Prescribing Cascades:
  Polypharmacy increases the possibility of prescribing
  cascades when additional drugs are prescribed to treat
adverse effects (ADE) of other drugs.
I Prevention:
Polypharmacy in older adults refers to the use of multiple
medications simultaneously, which can lead to adverse effects, drug
interactions, and other complications. Preventing polypharmacy is
essential for improving health outcomes in older adults. The
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strategies can be broken down into three levels of prevention:
primary, secondary, and tertiary prevention.
1. Primary Prevention:
Primary prevention aims to stop polypharmacy before it starts by
promoting healthy behaviors, minimizing the need for medications,
and fostering good prescribing practices.
Older adults education: Encourage healthy lifestyle choices like
proper nutrition, exercise, and preventive care to avoid or delay the
onset of chronic diseases that require medications.
Appropriate prescribing guidelines: Ensure that clinicians adhere to
evidence-based prescribing guidelines, particularly for older adults,
and avoid unnecessary medications.
Regular reviews of the medication regimen: Establish systems for
early detection of unnecessary prescriptions, especially during the
initial stages of chronic disease management.
Shared decision-making: Involve older adults in conversations
about treatment goals and the need for medications, ensuring that
they understand the potential risks and benefits of each drug.
Non-pharmacologic interventions: Promote the use of alternatives
to medication, such as physical therapy, lifestyle modifications, and
                              17
psychological therapies, for managing conditions like chronic pain
or anxiety.
2. Secondary Prevention: ( early detection and early treatment )
Secondary prevention involves early detection of polypharmacy and
interventions aimed at reducing the number of medications used and
minimizing harm.
Medication reviews: Conduct regular medication reviews with
healthcare providers to assess the appropriateness of each drug.
This includes reviewing potential drug-drug interactions, side
effects, and the necessity of each medication.
Deprescribing: Develop a plan for discontinuing unnecessary or
harmful medications, gradually and safely, to reduce the medication
burden.
Adverse drug reaction monitoring: Regularly monitor for adverse
drug reactions, especially when new medications are added or when
doses are adjusted.
Coordination of care: Ensure effective communication between
specialists and primary care providers to avoid duplicative or
conflicting prescriptions.
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Polypharmacy risk tools: Use validated tools such as the Beers
Criteria or STOPP/START criteria to identify potentially
inappropriate medications for older adults.
3. Tertiary Prevention: (Rehabilitation)
Tertiary prevention focuses on managing and minimizing the harm
already caused by polypharmacy, improving quality of life, and
preventing further complications.
Manage complications: Address complications related to
polypharmacy, such as falls, cognitive decline, or hospitalizations
due to adverse drug reactions.
Support systems: Provide support for medication management,
including reminders, pill organizers, or caregiver assistance, to
ensure that patients take their medications safely and as prescribed.
Palliative care and end-of-life discussions: In patients with
advanced illness or limited life expectancy, consider stopping
medications that do not contribute to quality of life, focusing on
comfort and symptom management instead.
Rehabilitation and recovery programs: Offer physical and
occupational therapy to help older adults recover from the adverse
effects of polypharmacy, such as muscle weakness or falls.
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By addressing polypharmacy at these different levels, healthcare
providers can help older adults achieve better health outcomes,
reduce the risk of medication-related harm, and improve their
overall quality of life.
 Role of geriatric home nursing according to poly
pharmacy:
1-Medication management and monitoring:
 Nurses help ensure that medication are taken correctly,
 on time, and in the right dosages. They may also monitor
 for potential side effects, drug interactions, or adverse
 reactions, which are more common in older adults.
2-Assessment and Review of Medication:
 Geriatric nurses collaborate with physicians to assess the
 appropriateness of each medication. This includes
 reviewing medication regularly to ensure they are still
 necessary and identifying any that might be redundant or
 harmful.
3-Patient and caregiver Education:
 Nurses educate both patients and thier caregiver about
 the risks of polypharmacy, proper medication
 administration, and potential side effects, empowering
 them to make informed decisions about treatment.
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4-Promoting Adherence:
 Nurses play a key role in helping patients adhere to their
 prescribed medication by providing support, reminder,
 and strategies to manage complex medication schedules.
5-Advocacy and coordination:
 Geriatric nurses act as advocate, communicating with
 other healthcare providers to address concerns related to
 polypharmacy and ensure coordinated care across
 different specialist and healthcare teams.
6-Preventing Drug - Related problems:
 By monitoring and assessing drug therapy, nurses can
 prevent medication - related complications such as falls ,
 cognitive decline and other adverse effects.
Health education:
1-Older adults Education:
 Explain the purpose, dosage, and side effects of each
medication.
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 Use simple language and visual aids for better
understanding.
 Encourage the use of pill organizers and medication apps
for adherence.
2-Caregiver Involvement:
 Educate caregivers on medication management and
monitoring for side effects.
Provide clear instructions on administering medications.
3-Tools and Resources:
 Recommend pill organizers, medication apps, and
educational brochures.
Use the teach-back method to ensure understanding.
4-Regular Follow-ups:
 Schedule regular medication reviews with healthcare
providers.
 Advise older adults to bring all medications, including
OTC drugs and supplements, to appointments.
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            5-Addressing Barriers:
             Help older adults overcome financial, physical, or
             psychological barriers
            to adherence.
             Promote non-pharmacological interventions like lifestyle
            changes and alternative therapies.
            6-Why It Matters:
            Reduces medication errors and improves adherence.
            Prevents adverse outcomes like hospitalizations.
             Empowers patients and caregivers to manage
            medications effectively.
Nursing                     Goal         Nursing               Evaluation
Diagnosis                                Intervention
                                        23
Decrease in                   Short-Term        Nursing Assessment:      Evaluation :
Alertness                     Goals:
                                                1.Patient History        Improved evidenced
related to: side              1.Medication                               by
effects of                                    Medical History:
                              Understanding:
medications                                                              1.Cognitive
                                              Chronic illnesses (e.g.,
affecting                      -The patient                              Function:
                              will correctly  hypertension, diabetes,
neurotransmitter                              depression).               Improved orientation
balance.                      verbalize the
                                                                         to person, place, and
                              purpose and     Previous episodes of
                                                                         time within 72 hours
                              dosage of each confusion or cognitive
                                                                         after medication
Subjective                    medication      impairment.
                                                                         review.
data:                         they are taking
                                              Medication History:
                              within 48                                  Visual hallucinations
1-Patient Reports:                            List of current
                              hours.                                     and misperceptions
I often forget if I took my                   medications                improved with dose
                              2.Cognitive
morning pills.                                (prescription and over-    adjustments and
                              Function
                                              the-counter).              deprescribing.
 Sometimes I feel dizzy or    Monitoring:
lightheaded after taking my                   Allergies:                 Improved short-term
                              -The patient
medications.                                  Document any known         memory, evidenced
                              will
                                              allergies and reactions    by the patient
2-Family Reports:             demonstrate
                                              to medications.            recalling recent
We've noticed changes in      improved
                                                                         events and following
her memory and mood.          orientation (to 2.Cognitive                instructions
                              person, place,  Assessment
She seems more                and time)                                  accurately.
disoriented, especially in                    Orientation:
                              during daily
the evenings.                 assessments     Assess orientation to
                              within one      person, place, time, and
                              week.           situation                  2. Medication
Objective data:
                              3.Medication      Memory:                  Safety:
1-Cognitive Assessment:       Management:
                                                Evaluate shortterm and   Improved adherence
Mini-Mental State             -The patient      long-term memory         to a simplified
Examination (MMSE)            will utilize a    through simple recall    medication regimen
score indicating mild         pill organizer    tasks.                   without further
cognitive impairment.         or medication                              cognitive
                                               24
2-Disorientation to time or   management          Mini-Mental State         impairment.
place during conversations.   system              Examination (MMSE):
                                                                            Caregivers
                              effectively by
                                                  Administer the MMSE       demonstrated
                              the next
                                                  or other cognitive        understanding of
3-Vital Signs:                medication
                                                  assessment tools to       medication
Blood pressure: 130/85        review
                                                  quantify cognitive        management,
mmHg (medication-related      appointment.
                                                  function.                 enhancing patient
hypotension suspected).       4.Family                                      safety.
                                                  3.Physical Assessment
Heart rate: 78 bpm,           Involvement:
                                                                            3. Behavioral and
                                                  Vital Signs:
regular.                      -The family                                   Emotional Well-
                              will participate    Monitor blood             Being:
4-Physical Examination:
                              in medication       pressure, heart rate,
Signs of dehydration (dry                                                   Improved mood and
                              education           respiration, and
mucous membranes).                                temperature.              reduced anxiety
                              sessions and
                                                                            related to confusion.
Diminished attention span     demonstrate         Neurological
noted during the              proper              Examination:              Hallucinations
assessment.                   medication                                    decreased, and the
                                                  Assess for any signs of   patient responded
5-Laboratory Results:         administration
                                                  neurological deficits     appropriately to
                              techniques
Recent blood work                                 (e.g., weakness,
                              within 72                                     surroundings.
showing normal renal                              numbness).
                              hours.
function but elevated liver                       Hydration Status:
                                                                            4. Functional
                              Long-Term                                     Independence:
enzymes (potential impact
                              Goals               Look for signs of
of medications).                                  dehydration (e.g., dry
                              1.Cognitive
                                                  mucous membranes,         Improved ability to
                              Stability:
                                                  skin turgor).             perform daily
                              -The patient                                  activities with
                                                  General Appearance:
                              will maintain                                 minimal assistance.
                              cognitive           Observe the patient’s
                              function and        level of alertness,       The patient engaged
                              demonstrate no      mood, and behavior.       more in social
                              further                                       interactions and
                                                      4.Medication Review   reported a better
                              episodes of
                                                  Polypharmacy Risks:       quality of life.
                              confusion or
                              disorientation      Identify potential drug   5. Patient Education
                              over the next
                                                 25
month.             interactions and side       and Monitoring:
                   effects.
2.Medication                                   The patient and
Adherence:         Adherence                   caregiver
                                               demonstrated
-The patient        Assess the patient's
                                               improved
will adhere to     understanding of their
                                               understanding of
the prescribed     medication regimen
medication         and ability to adhere to    medication purposes,
regimen with       it.                         side effects, and safe
no missed                                      use.
                   5.Functional
doses or           Assessment                  Health Education for
medication                                     Confusion Related to
errors reported    - Activities of Daily       Polypharmacy
over the next      Living (ADLs):
three months.                                  1. Understanding
                   -Evaluate the patient’s     Polypharmacy:
3.Reduction of     ability to perform
Side Effects:                                  Polypharmacy refers
                   ADLs independently
                                               to the use of multiple
-The patient       (e.g., bathing, dressing,
                                               medications, often
will report a      eating).
                                               seen in older adults
decrease in        -Instrumental Activities    with chronic
medication-        of Daily Living             conditions.
related side       (IADLs):
effects (e.g.,                                 It increases the risk
dizziness,         -Assess abilities related   of confusion,
confusion)         to managing                 hallucinations, falls,
within six         medications, finances,      and other side effects
                   and transportation.         due to drug
weeks, as
assessed                                       interactions.
through                                        2. Medication
                   Nursing Interventions
ongoing                                        Management:
evaluation.        1.Medication Review:
                                               Always follow the
                    - Rationale: Regularly
                                               medication schedule.
                   review all medications
                   with the patient and        Avoid self-
                   healthcare team to          medicating or using
                   identify unnecessary        over-the-counter
                  26
 prescriptions, potential    drugs without
 drug interactions, or       consulting a
 duplicate therapies.        healthcare provider.
 2. Simplify Medication      Use a pill organizer
 Regimen:                    to prevent missed or
                             duplicate doses.
 - Rationale:
 Simplifying the             Regularly update the
 medication schedule         medication list and
 (e.g., using                share it with all
 combination pills or        healthcare providers.
 reducing the number of
                             3. Recognizing Side
 doses per day) can help     Effects:
 improve adherence and
 reduce confusion.           Report signs of
                             confusion, dizziness,
 3.Educate the Patient
                             memory loss, or
 and Family:
                             visual hallucinations
 - Rationale: Providing      immediately.
 education about each        Monitor for physical
 medication's purpose,       changes, such as
 dosage, and potential       fatigue, weakness
 side effects can
 empower the patient
 and family, promoting
 better management and
 awareness.
 4.Use Medication
 Management Tools:
 - Rationale: Utilize pill
 organizers, medication
 calendars, or reminder
 apps to help the patient
 track their medications
 and reduce the risk of
27
 missed doses or
 confusion.
 5.Monitor Cognitive
 Function:
 -Rationale: Regularly
 assess the patient's
 cognitive status to
 detect any changes
 early, allowing for
 timely interventions or
 adjustments in
 medication.
 6.Encourage a Routine
 -Rationale:
 Establishing a daily
 routine that includes
 medication times can
 provide structure,
 helping reduce
 confusion and anxiety
 regarding medication
 management.
 Health Education
 Topics:
 1.Understanding
 Polypharmacy:
 -Definition:Explain
 what polypharmacy is
 and why it can pose
 risks, including
 confusion and potential
 drug interactions.
28
 -Importance of
 Awareness: Encourage
 awareness of all
 medications being
 taken, including over-
 the-counter drugs and
 supplements.
 2.Medication
 Management:
 -Keeping a Medication
 List:Teach the patient
 to maintain an updated
 list of all medications,
 including dosages and
 schedules.
 -Using Pill Organizers:
 Introduce the use of pill
 organizers or
 medication reminders
 to help manage daily
 doses.
 3.Recognizing Side
 Effects:
  -Common Symptoms:
 Educate about common
 side effects that can
 lead to confusion, such
 as dizziness,
 drowsiness, or changes
 in mood.
 -When to Seek Help:
 Encourage the patient
 to report any new or
29
 worsening symptoms to
 their healthcare
 provider immediately.
 4.Communication with
 Healthcare Providers:
 -Open Dialogue: Stress
 the importance of
 discussing all
 medications with
 healthcare providers,
 including any changes
 in health status or new
 symptoms.
 -Questions to Ask:
 Provide a list of
 questions to ask about
 medications, such as
 purpose, side effects,
 and interactions.
 6.Lifestyle
 Modifications:
 -Healthy Diet:
 Encourage a balanced
 diet to support overall
 health and cognitive
 function.
 -Hydration: Stress the
 importance of staying
 hydrated, as
 dehydration can worsen
 confusion.
30
31
Reference:
National library of Medicine World Health
Organization (WHO).
American Geriatrics Society (AGS).
National Institute on Aging (NIA).
Articles on polypharmacy and Geriatric Care.
British Geriatrics Society (BGS).
 Journal of the American Medical Association
(JAMA).
 Polypharmacy and Medication Safety in Older Adults.
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