1|Page
NR 568 Final Exam Advanced Pharmacology Adult-
Gerontology Primary Care Newest Exam Preparation
With Complete Questions And Correct Answers With
Rationales Already Graded A+Brand New Version!!
1. A 72-year-old patient with hypertension is started on a new
antihypertensive medication. Which age-related physiological change
most significantly affects the pharmacokinetics of this medication?
A) Increased hepatic blood flow
B) Decreased glomerular filtration rate
C) Increased total body water
D) Enhanced first-pass metabolism
Answer: B) Decreased glomerular filtration rate
Explanation: In older adults, renal function declines with age, leading to
a decreased glomerular filtration rate (GFR). This reduction impairs the
renal clearance of many medications, particularly those that are renally
eliminated, increasing the risk of drug accumulation and toxicity.
Hepatic blood flow and first-pass metabolism typically decrease with
age, and total body water decreases while body fat increases. Thus,
decreased GFR is the most significant age-related pharmacokinetic
change affecting drug clearance.
,2|Page
2. A drug has a half-life of 24 hours and is administered once daily.
Approximately how many days will it take to reach steady-state
concentration?
A) 1 day
B) 2 days
C) 5 days
D) 10 days
Answer: C) 5 days
Explanation: Steady-state concentration is reached after approximately
4 to 5 half-lives of a drug. With a half-life of 24 hours, steady-state is
achieved in about 4 to 5 days (96 to 120 hours). This principle is
fundamental in pharmacokinetics for understanding dosing intervals
and drug accumulation.
3. Which of the following best describes the pharmacodynamic changes
commonly observed in the geriatric population?
A) Increased receptor sensitivity to all medications
B) Decreased number of drug receptors
C) Altered homeostatic mechanisms and receptor responsiveness
D) Uniform decrease in drug efficacy across all drug classes
,3|Page
Answer: C) Altered homeostatic mechanisms and receptor
responsiveness
Explanation: Pharmacodynamics in older adults involves changes in
receptor sensitivity and homeostatic mechanisms, which can lead to
altered responses to medications. For example, older adults may have
increased sensitivity to benzodiazepines and anticoagulants, but this is
not uniform across all drug classes. Receptor number may change, but
the primary concern is the altered physiological response and reduced
homeostatic reserve.
4. A patient with chronic kidney disease is prescribed a medication that
is primarily excreted renally. What adjustment is most appropriate?
A) Increase the dose
B) Decrease the dose or increase the dosing interval
C) No adjustment is needed
D) Switch to a medication with a shorter half-life
Answer: B) Decrease the dose or increase the dosing interval
Explanation: In chronic kidney disease, renal excretion is impaired,
leading to drug accumulation. The appropriate adjustment is to
decrease the dose or increase the dosing interval to prevent toxicity.
Increasing the dose would worsen accumulation, and no adjustment
would be unsafe. Switching to a shorter half-life drug may not address
the underlying clearance issue.
, 4|Page
5. A 65-year-old patient is started on a new medication with a high first-
pass effect. Which route of administration would avoid this effect?
A) Oral
B) Sublingual
C) Intravenous
D) Both B and C
Answer: D) Both B and C
Explanation: First-pass metabolism occurs when a drug is absorbed
from the gastrointestinal tract and passes through the liver before
reaching systemic circulation. Sublingual and intravenous routes bypass
the portal circulation, thus avoiding first-pass metabolism. Oral
administration is subject to first-pass effect.
6. A patient is taking a medication that is 90% protein-bound. Which
condition would most likely increase the free fraction of this drug?
A) Hypoalbuminemia
B) Decreased hepatic blood flow
C) Increased glomerular filtration
D) Increased dietary protein intake
Answer: A) Hypoalbuminemia
Explanation: Drugs that are highly protein-bound rely on albumin for
transport. In conditions like hypoalbuminemia (common in older adults,
NR 568 Final Exam Advanced Pharmacology Adult-
Gerontology Primary Care Newest Exam Preparation
With Complete Questions And Correct Answers With
Rationales Already Graded A+Brand New Version!!
1. A 72-year-old patient with hypertension is started on a new
antihypertensive medication. Which age-related physiological change
most significantly affects the pharmacokinetics of this medication?
A) Increased hepatic blood flow
B) Decreased glomerular filtration rate
C) Increased total body water
D) Enhanced first-pass metabolism
Answer: B) Decreased glomerular filtration rate
Explanation: In older adults, renal function declines with age, leading to
a decreased glomerular filtration rate (GFR). This reduction impairs the
renal clearance of many medications, particularly those that are renally
eliminated, increasing the risk of drug accumulation and toxicity.
Hepatic blood flow and first-pass metabolism typically decrease with
age, and total body water decreases while body fat increases. Thus,
decreased GFR is the most significant age-related pharmacokinetic
change affecting drug clearance.
,2|Page
2. A drug has a half-life of 24 hours and is administered once daily.
Approximately how many days will it take to reach steady-state
concentration?
A) 1 day
B) 2 days
C) 5 days
D) 10 days
Answer: C) 5 days
Explanation: Steady-state concentration is reached after approximately
4 to 5 half-lives of a drug. With a half-life of 24 hours, steady-state is
achieved in about 4 to 5 days (96 to 120 hours). This principle is
fundamental in pharmacokinetics for understanding dosing intervals
and drug accumulation.
3. Which of the following best describes the pharmacodynamic changes
commonly observed in the geriatric population?
A) Increased receptor sensitivity to all medications
B) Decreased number of drug receptors
C) Altered homeostatic mechanisms and receptor responsiveness
D) Uniform decrease in drug efficacy across all drug classes
,3|Page
Answer: C) Altered homeostatic mechanisms and receptor
responsiveness
Explanation: Pharmacodynamics in older adults involves changes in
receptor sensitivity and homeostatic mechanisms, which can lead to
altered responses to medications. For example, older adults may have
increased sensitivity to benzodiazepines and anticoagulants, but this is
not uniform across all drug classes. Receptor number may change, but
the primary concern is the altered physiological response and reduced
homeostatic reserve.
4. A patient with chronic kidney disease is prescribed a medication that
is primarily excreted renally. What adjustment is most appropriate?
A) Increase the dose
B) Decrease the dose or increase the dosing interval
C) No adjustment is needed
D) Switch to a medication with a shorter half-life
Answer: B) Decrease the dose or increase the dosing interval
Explanation: In chronic kidney disease, renal excretion is impaired,
leading to drug accumulation. The appropriate adjustment is to
decrease the dose or increase the dosing interval to prevent toxicity.
Increasing the dose would worsen accumulation, and no adjustment
would be unsafe. Switching to a shorter half-life drug may not address
the underlying clearance issue.
, 4|Page
5. A 65-year-old patient is started on a new medication with a high first-
pass effect. Which route of administration would avoid this effect?
A) Oral
B) Sublingual
C) Intravenous
D) Both B and C
Answer: D) Both B and C
Explanation: First-pass metabolism occurs when a drug is absorbed
from the gastrointestinal tract and passes through the liver before
reaching systemic circulation. Sublingual and intravenous routes bypass
the portal circulation, thus avoiding first-pass metabolism. Oral
administration is subject to first-pass effect.
6. A patient is taking a medication that is 90% protein-bound. Which
condition would most likely increase the free fraction of this drug?
A) Hypoalbuminemia
B) Decreased hepatic blood flow
C) Increased glomerular filtration
D) Increased dietary protein intake
Answer: A) Hypoalbuminemia
Explanation: Drugs that are highly protein-bound rely on albumin for
transport. In conditions like hypoalbuminemia (common in older adults,
