, NURS 5334 / NURS5334: Advanced
Pharmacology – Midterm Exam
Questions and Correct Answers with
Rationale 2026/2027
Question 1
A 65-year-old patient with renal insufficiency (CrCl 35 mL/min)
is prescribed a medication that is primarily excreted by the
kidneys. What is the most appropriate pharmacological
adjustment?
A. Increase the dosing interval.
B. Increase the loading dose.
C. Switch to a prodrug.
D. Administer with a proton pump inhibitor to increase
absorption.
Correct Answer: A. Increase the dosing interval.
Rationale: Decreased renal clearance necessitates a
reduction in total drug exposure, typically achieved by
extending the time between doses to prevent toxic
accumulation.
Question 2
Which of the following best describes the "first-pass effect" in
pharmacology?
A. The initial binding of a drug to plasma proteins.
, B. The metabolism of a drug by the liver before it reaches
systemic circulation.
C. The excretion of a drug via the biliary tract.
D. The rapid onset of a drug given via intravenous
injection.
Correct Answer: B. The metabolism of a drug by the liver
before it reaches systemic circulation.
Rationale: Drugs absorbed from the GI tract travel through
the portal vein to the liver, where a significant portion may
be metabolized before entering general circulation,
reducing bioavailability.
Question 3
An Advanced Practice Registered Nurse (APRN) is prescribing
a drug with a narrow therapeutic index. What is the primary
clinical implication?
A. The drug is safe to prescribe without laboratory
monitoring.
B. The drug requires frequent monitoring of serum drug
levels.
C. The drug has no potential for drug-drug interactions.
D. The drug has a very short half-life.
Correct Answer: B. The drug requires frequent monitoring
of serum drug levels.
Rationale: Drugs with a narrow therapeutic index have a
small window between the minimum effective
, concentration and the minimum toxic concentration,
necessitating precise dosing and monitoring.
Question 4
Which mechanism of action is associated with Angiotensin-
Converting Enzyme (ACE) Inhibitors?
A. Direct blockade of angiotensin II receptors.
B. Inhibition of the conversion of angiotensin I to
angiotensin II.
C. Blockade of calcium channels in vascular smooth
muscle.
D. Stimulation of alpha-2 receptors in the central nervous
system.
Correct Answer: B. Inhibition of the conversion of
angiotensin I to angiotensin II.
Rationale: ACE inhibitors block the enzyme responsible for
converting Angiotensin I to the potent vasoconstrictor
Angiotensin II, thereby lowering blood pressure.
Question 5
A patient is taking Warfarin (a highly protein-bound drug) and is
prescribed a new medication that is also highly protein-bound.
What is the potential pharmacological risk?
A. Decreased absorption of Warfarin.
B. Increased free fraction of Warfarin, leading to potential
toxicity.
C. Increased hepatic clearance of Warfarin.
Pharmacology – Midterm Exam
Questions and Correct Answers with
Rationale 2026/2027
Question 1
A 65-year-old patient with renal insufficiency (CrCl 35 mL/min)
is prescribed a medication that is primarily excreted by the
kidneys. What is the most appropriate pharmacological
adjustment?
A. Increase the dosing interval.
B. Increase the loading dose.
C. Switch to a prodrug.
D. Administer with a proton pump inhibitor to increase
absorption.
Correct Answer: A. Increase the dosing interval.
Rationale: Decreased renal clearance necessitates a
reduction in total drug exposure, typically achieved by
extending the time between doses to prevent toxic
accumulation.
Question 2
Which of the following best describes the "first-pass effect" in
pharmacology?
A. The initial binding of a drug to plasma proteins.
, B. The metabolism of a drug by the liver before it reaches
systemic circulation.
C. The excretion of a drug via the biliary tract.
D. The rapid onset of a drug given via intravenous
injection.
Correct Answer: B. The metabolism of a drug by the liver
before it reaches systemic circulation.
Rationale: Drugs absorbed from the GI tract travel through
the portal vein to the liver, where a significant portion may
be metabolized before entering general circulation,
reducing bioavailability.
Question 3
An Advanced Practice Registered Nurse (APRN) is prescribing
a drug with a narrow therapeutic index. What is the primary
clinical implication?
A. The drug is safe to prescribe without laboratory
monitoring.
B. The drug requires frequent monitoring of serum drug
levels.
C. The drug has no potential for drug-drug interactions.
D. The drug has a very short half-life.
Correct Answer: B. The drug requires frequent monitoring
of serum drug levels.
Rationale: Drugs with a narrow therapeutic index have a
small window between the minimum effective
, concentration and the minimum toxic concentration,
necessitating precise dosing and monitoring.
Question 4
Which mechanism of action is associated with Angiotensin-
Converting Enzyme (ACE) Inhibitors?
A. Direct blockade of angiotensin II receptors.
B. Inhibition of the conversion of angiotensin I to
angiotensin II.
C. Blockade of calcium channels in vascular smooth
muscle.
D. Stimulation of alpha-2 receptors in the central nervous
system.
Correct Answer: B. Inhibition of the conversion of
angiotensin I to angiotensin II.
Rationale: ACE inhibitors block the enzyme responsible for
converting Angiotensin I to the potent vasoconstrictor
Angiotensin II, thereby lowering blood pressure.
Question 5
A patient is taking Warfarin (a highly protein-bound drug) and is
prescribed a new medication that is also highly protein-bound.
What is the potential pharmacological risk?
A. Decreased absorption of Warfarin.
B. Increased free fraction of Warfarin, leading to potential
toxicity.
C. Increased hepatic clearance of Warfarin.
