NURS 6521 FINAL EXAM
Advanced Pharmacology – Pharmacokinetics,
Cardiovascular, Endocrine, CNS, and Anti-
Infective Agents – Questions with Answers
and Rationales
Instructions: This exam contains multiple-choice questions covering the core content tested on the
NURS 6521 Final Exam at Walden University. Topics include pharmacokinetics and pharmacodynamics,
cardiovascular medications, endocrine drugs, CNS agents, anti-infectives, and special population
prescribing.
1. A patient taking a highly protein-bound medication develops severe
hypoalbuminemia. Which pharmacologic change is most likely to
occur?
A. Decreased free drug concentration
B. Increased renal drug activation
C. Increased free drug concentration
D. Decreased hepatic blood flow
Correct Answer: C — Increased free drug concentration
Rationale: Reduced albumin decreases protein binding, leaving a
larger proportion of the medication unbound and pharmacologically
active. This can increase therapeutic and adverse effects, particularly
with highly protein-bound drugs .
,2. A medication has a half-life of 8 hours. Approximately how long will
it take to reach near steady-state concentrations during regular
dosing?
A. 8 hours
B. 16 hours
C. 24 hours
D. 32–40 hours
Correct Answer: D — 32–40 hours
Rationale: Most drugs reach approximately 90–97% of steady state
after about four to five half-lives. Five 8-hour half-lives equal
approximately 40 hours .
3. A patient with significant hepatic impairment is prescribed a
medication extensively metabolized by the liver. What should the
clinician anticipate?
A. Faster elimination
B. Possible drug accumulation
C. Complete prevention of absorption
D. Increased renal filtration
,Correct Answer: B — Possible drug accumulation
Rationale: Impaired hepatic metabolism can reduce drug clearance and
prolong exposure, increasing the risk of accumulation and toxicity .
4. Which pharmacokinetic process describes movement of a
medication from the gastrointestinal tract into systemic circulation?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Correct Answer: C — Absorption
Rationale: Absorption is the movement of a drug from its site of
administration into systemic circulation .
5. A patient receives a medication intravenously. Which
pharmacokinetic characteristic is essentially complete with IV
administration?
A. Bioavailability
B. Protein binding
, C. Metabolism
D. Excretion
Correct Answer: A — Bioavailability
Rationale: IV administration places medication directly into systemic
circulation, producing essentially 100% bioavailability and bypassing
an absorption step .
6. A medication's therapeutic effect decreases when a patient begins
taking a strong enzyme inducer. What mechanism best explains this
finding?
A. Reduced renal perfusion
B. Increased drug metabolism
C. Reduced protein synthesis
D. Increased intestinal absorption
Correct Answer: B — Increased drug metabolism
Rationale: Enzyme induction increases metabolic activity for
susceptible drugs, potentially lowering plasma concentrations and
therapeutic effects .
7. Which finding most strongly suggests a narrow therapeutic index?
Advanced Pharmacology – Pharmacokinetics,
Cardiovascular, Endocrine, CNS, and Anti-
Infective Agents – Questions with Answers
and Rationales
Instructions: This exam contains multiple-choice questions covering the core content tested on the
NURS 6521 Final Exam at Walden University. Topics include pharmacokinetics and pharmacodynamics,
cardiovascular medications, endocrine drugs, CNS agents, anti-infectives, and special population
prescribing.
1. A patient taking a highly protein-bound medication develops severe
hypoalbuminemia. Which pharmacologic change is most likely to
occur?
A. Decreased free drug concentration
B. Increased renal drug activation
C. Increased free drug concentration
D. Decreased hepatic blood flow
Correct Answer: C — Increased free drug concentration
Rationale: Reduced albumin decreases protein binding, leaving a
larger proportion of the medication unbound and pharmacologically
active. This can increase therapeutic and adverse effects, particularly
with highly protein-bound drugs .
,2. A medication has a half-life of 8 hours. Approximately how long will
it take to reach near steady-state concentrations during regular
dosing?
A. 8 hours
B. 16 hours
C. 24 hours
D. 32–40 hours
Correct Answer: D — 32–40 hours
Rationale: Most drugs reach approximately 90–97% of steady state
after about four to five half-lives. Five 8-hour half-lives equal
approximately 40 hours .
3. A patient with significant hepatic impairment is prescribed a
medication extensively metabolized by the liver. What should the
clinician anticipate?
A. Faster elimination
B. Possible drug accumulation
C. Complete prevention of absorption
D. Increased renal filtration
,Correct Answer: B — Possible drug accumulation
Rationale: Impaired hepatic metabolism can reduce drug clearance and
prolong exposure, increasing the risk of accumulation and toxicity .
4. Which pharmacokinetic process describes movement of a
medication from the gastrointestinal tract into systemic circulation?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Correct Answer: C — Absorption
Rationale: Absorption is the movement of a drug from its site of
administration into systemic circulation .
5. A patient receives a medication intravenously. Which
pharmacokinetic characteristic is essentially complete with IV
administration?
A. Bioavailability
B. Protein binding
, C. Metabolism
D. Excretion
Correct Answer: A — Bioavailability
Rationale: IV administration places medication directly into systemic
circulation, producing essentially 100% bioavailability and bypassing
an absorption step .
6. A medication's therapeutic effect decreases when a patient begins
taking a strong enzyme inducer. What mechanism best explains this
finding?
A. Reduced renal perfusion
B. Increased drug metabolism
C. Reduced protein synthesis
D. Increased intestinal absorption
Correct Answer: B — Increased drug metabolism
Rationale: Enzyme induction increases metabolic activity for
susceptible drugs, potentially lowering plasma concentrations and
therapeutic effects .
7. Which finding most strongly suggests a narrow therapeutic index?
