NR 601 Exam 4: Primary Care Aging - Chamberlain
University Updated and Latest Questions and Correct
Answers with Rationale
1. As people age, which physiological change most significantly affects the volume of distribution for
lipophilic medications like diazepam?
A. Increased total body water
B. Increased serum albumin levels
C. Decreased liver mass
D. Increased body fat percentage
Correct Answer: D
Rationale: Aging leads to a decrease in lean muscle mass and a significant increase in total body fat
percentage. Lipophilic drugs distribute into adipose tissue, which means their volume of distribution
increases in older adults. This change can result in a prolonged half-life and increased risk of
accumulation for medications like benzodiazepines. Practitioners must exercise caution when dosing
these substances to avoid prolonged sedation or respiratory depression. Understanding these
pharmacokinetic shifts is essential for providing safe pharmacotherapy to geriatric patients.
2. According to the Beers Criteria, which of the following medications should generally be avoided in older
adults due to the risk of confusion and falls?
A. Lisinopril
B. Metformin
C. Diphenhydramine
D. Atorvastatin
,Correct Answer: C
Rationale: Diphenhydramine is a first-generation antihistamine with potent anticholinergic properties
that can cause significant adverse effects in the elderly. Older adults are particularly susceptible to
central nervous system effects such as confusion, dizziness, and sedation. These symptoms directly
contribute to an increased risk of falls and subsequent fractures. The Beers Criteria recommends
avoiding this class of medication for the treatment of insomnia or allergic reactions in this population.
Alternative therapies with fewer side effects should always be considered first in primary care settings.
3. A 78-year-old patient takes ten different medications daily. Which term best describes the increased risk
of adverse drug reactions resulting from this situation?
A. Drug-drug synergy
B. Pharmacokinetic enhancement
C. Therapeutic duplication
D. Polypharmacy
Correct Answer: D
Rationale: Polypharmacy is commonly defined as the concurrent use of five or more medications by a
single patient. This condition is highly prevalent among older adults who often manage multiple chronic
health conditions simultaneously. Excessive medication use increases the likelihood of drug-drug
interactions and adverse drug reactions significantly. It also complicates adherence and can lead to a
prescribing cascade where new drugs are added to treat side effects. Primary care providers should
perform regular medication reviews to identify and discontinue unnecessary or harmful prescriptions.
4. Which assessment tool is specifically designed to evaluate a patient’s risk for falls by measuring the time
it takes to stand, walk three meters, and sit back down?
A. The Braden Scale
, B. The Timed Up and Go (TUG) Test
C. The PHQ-9 Survey
D. The Mini-Mental State Examination
Correct Answer: B
Rationale: The Timed Up and Go test is a simple and reliable clinical tool used to assess mobility and fall
risk in older adults. A patient is timed while they rise from a chair, walk three meters, turn around, and sit
back down. Completing the task in more than twelve seconds generally indicates a higher risk for falls.
This assessment provides valuable data regarding the patient’s balance, gait speed, and functional
capacity. It serves as a critical component of a comprehensive geriatric assessment in the primary care
setting.
5. In the context of geriatric syndromes, which of the following is considered a hallmark clinical feature of
delirium?
A. Gradual memory loss over several years
B. Acute onset with fluctuating levels of consciousness
C. Persistent and stable cognitive impairment
D. Social withdrawal and depressed mood
Correct Answer: B
Rationale: Delirium is characterized by an acute change in mental status that often fluctuates throughout
the day. Unlike dementia, which involves a slow and progressive decline, delirium represents a medical
emergency that requires immediate investigation. Patients often exhibit inattention, disorganized
thinking, and altered levels of consciousness ranging from lethargy to agitation. Common triggers include
University Updated and Latest Questions and Correct
Answers with Rationale
1. As people age, which physiological change most significantly affects the volume of distribution for
lipophilic medications like diazepam?
A. Increased total body water
B. Increased serum albumin levels
C. Decreased liver mass
D. Increased body fat percentage
Correct Answer: D
Rationale: Aging leads to a decrease in lean muscle mass and a significant increase in total body fat
percentage. Lipophilic drugs distribute into adipose tissue, which means their volume of distribution
increases in older adults. This change can result in a prolonged half-life and increased risk of
accumulation for medications like benzodiazepines. Practitioners must exercise caution when dosing
these substances to avoid prolonged sedation or respiratory depression. Understanding these
pharmacokinetic shifts is essential for providing safe pharmacotherapy to geriatric patients.
2. According to the Beers Criteria, which of the following medications should generally be avoided in older
adults due to the risk of confusion and falls?
A. Lisinopril
B. Metformin
C. Diphenhydramine
D. Atorvastatin
,Correct Answer: C
Rationale: Diphenhydramine is a first-generation antihistamine with potent anticholinergic properties
that can cause significant adverse effects in the elderly. Older adults are particularly susceptible to
central nervous system effects such as confusion, dizziness, and sedation. These symptoms directly
contribute to an increased risk of falls and subsequent fractures. The Beers Criteria recommends
avoiding this class of medication for the treatment of insomnia or allergic reactions in this population.
Alternative therapies with fewer side effects should always be considered first in primary care settings.
3. A 78-year-old patient takes ten different medications daily. Which term best describes the increased risk
of adverse drug reactions resulting from this situation?
A. Drug-drug synergy
B. Pharmacokinetic enhancement
C. Therapeutic duplication
D. Polypharmacy
Correct Answer: D
Rationale: Polypharmacy is commonly defined as the concurrent use of five or more medications by a
single patient. This condition is highly prevalent among older adults who often manage multiple chronic
health conditions simultaneously. Excessive medication use increases the likelihood of drug-drug
interactions and adverse drug reactions significantly. It also complicates adherence and can lead to a
prescribing cascade where new drugs are added to treat side effects. Primary care providers should
perform regular medication reviews to identify and discontinue unnecessary or harmful prescriptions.
4. Which assessment tool is specifically designed to evaluate a patient’s risk for falls by measuring the time
it takes to stand, walk three meters, and sit back down?
A. The Braden Scale
, B. The Timed Up and Go (TUG) Test
C. The PHQ-9 Survey
D. The Mini-Mental State Examination
Correct Answer: B
Rationale: The Timed Up and Go test is a simple and reliable clinical tool used to assess mobility and fall
risk in older adults. A patient is timed while they rise from a chair, walk three meters, turn around, and sit
back down. Completing the task in more than twelve seconds generally indicates a higher risk for falls.
This assessment provides valuable data regarding the patient’s balance, gait speed, and functional
capacity. It serves as a critical component of a comprehensive geriatric assessment in the primary care
setting.
5. In the context of geriatric syndromes, which of the following is considered a hallmark clinical feature of
delirium?
A. Gradual memory loss over several years
B. Acute onset with fluctuating levels of consciousness
C. Persistent and stable cognitive impairment
D. Social withdrawal and depressed mood
Correct Answer: B
Rationale: Delirium is characterized by an acute change in mental status that often fluctuates throughout
the day. Unlike dementia, which involves a slow and progressive decline, delirium represents a medical
emergency that requires immediate investigation. Patients often exhibit inattention, disorganized
thinking, and altered levels of consciousness ranging from lethargy to agitation. Common triggers include
