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NURS 615 ADVANCED
PHARMACOTHERAPEUTICS) MARYVILLE
UNIVERSITY) ACTUAL EXAM 4 LATEST
2025/2026 ACCURATE QUESTIONS AND
CORRECT VERIFIED ANSWERS (A NEW
UPDATED VERSION) |GUARANTEED PASS
A+
Question 1
A 65-year-old patient with heart failure and cirrhosis is
prescribed a new medication with high protein binding. Which
pharmacokinetic change should the prescriber anticipate?
A) Decreased volume of distribution
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B) Increased free drug concentration
C) Reduced hepatic metabolism
D) Enhanced renal excretion
Answer: B) Increased free drug concentration
Rationale: Cirrhosis reduces albumin synthesis. High
protein-bound drugs have fewer binding sites, increasing free
(active) drug levels, raising efficacy and toxicity risk.
Question 2
A patient with a CYP2D6 poor metabolizer phenotype is
prescribed codeine for post-surgical pain. What outcome is
most likely?
A) Enhanced analgesic effect
B) Increased risk of toxicity
C) Minimal analgesic benefit
D) Prolonged duration of action
Answer: C) Minimal analgesic benefit
Rationale: Codeine requires CYP2D6 conversion to morphine.
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Poor metabolizers cannot activate codeine, resulting in little to
no analgesia.
Question 3
Scenario: A 72-year-old patient with reduced renal function
(eGFR 35 mL/min) requires antibiotic therapy. Which
medication would require the most significant dose adjustment?
A) Azithromycin
B) Ceftriaxone
C) Gentamicin
D) Doxycycline
Answer: C) Gentamicin
Rationale: Gentamicin is renally eliminated. Reduced eGFR
prolongs half-life dramatically. Azithromycin (hepatic),
ceftriaxone (dual), doxycycline (fecal) are safer.
Question 4
Which statement best describes the therapeutic index (TI)?
A) Ratio of ED50 to TD50
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B) Ratio of TD50 to ED50
C) Measure of drug absorption rate
D) Indicator of plasma protein binding
Answer: B) Ratio of TD50 to ED50
*Rationale: TI = TD50/ED50 (or LD50/ED50). Narrow TI
means small margin between therapeutic and toxic doses (e.g.,
digoxin, warfarin, phenytoin).*
Question 5
A drug following first-order elimination kinetics will
demonstrate which characteristic?
A) Constant amount eliminated per unit time
B) Elimination rate proportional to drug concentration
C) Zero drug detected after two half-lives
D) Saturation of metabolic pathways at therapeutic doses
Answer: B) Elimination rate proportional to drug
concentration
Rationale: First-order kinetics: constant fraction eliminated per
NURS 615 ADVANCED
PHARMACOTHERAPEUTICS) MARYVILLE
UNIVERSITY) ACTUAL EXAM 4 LATEST
2025/2026 ACCURATE QUESTIONS AND
CORRECT VERIFIED ANSWERS (A NEW
UPDATED VERSION) |GUARANTEED PASS
A+
Question 1
A 65-year-old patient with heart failure and cirrhosis is
prescribed a new medication with high protein binding. Which
pharmacokinetic change should the prescriber anticipate?
A) Decreased volume of distribution
,Page 2 of 230
B) Increased free drug concentration
C) Reduced hepatic metabolism
D) Enhanced renal excretion
Answer: B) Increased free drug concentration
Rationale: Cirrhosis reduces albumin synthesis. High
protein-bound drugs have fewer binding sites, increasing free
(active) drug levels, raising efficacy and toxicity risk.
Question 2
A patient with a CYP2D6 poor metabolizer phenotype is
prescribed codeine for post-surgical pain. What outcome is
most likely?
A) Enhanced analgesic effect
B) Increased risk of toxicity
C) Minimal analgesic benefit
D) Prolonged duration of action
Answer: C) Minimal analgesic benefit
Rationale: Codeine requires CYP2D6 conversion to morphine.
,Page 3 of 230
Poor metabolizers cannot activate codeine, resulting in little to
no analgesia.
Question 3
Scenario: A 72-year-old patient with reduced renal function
(eGFR 35 mL/min) requires antibiotic therapy. Which
medication would require the most significant dose adjustment?
A) Azithromycin
B) Ceftriaxone
C) Gentamicin
D) Doxycycline
Answer: C) Gentamicin
Rationale: Gentamicin is renally eliminated. Reduced eGFR
prolongs half-life dramatically. Azithromycin (hepatic),
ceftriaxone (dual), doxycycline (fecal) are safer.
Question 4
Which statement best describes the therapeutic index (TI)?
A) Ratio of ED50 to TD50
, Page 4 of 230
B) Ratio of TD50 to ED50
C) Measure of drug absorption rate
D) Indicator of plasma protein binding
Answer: B) Ratio of TD50 to ED50
*Rationale: TI = TD50/ED50 (or LD50/ED50). Narrow TI
means small margin between therapeutic and toxic doses (e.g.,
digoxin, warfarin, phenytoin).*
Question 5
A drug following first-order elimination kinetics will
demonstrate which characteristic?
A) Constant amount eliminated per unit time
B) Elimination rate proportional to drug concentration
C) Zero drug detected after two half-lives
D) Saturation of metabolic pathways at therapeutic doses
Answer: B) Elimination rate proportional to drug
concentration
Rationale: First-order kinetics: constant fraction eliminated per
