NURS 5334 ADVANCED
PHARMACOLOGY FINAL EXAM
QUESTIONS WITH CORRECT ANSWERS
(LATEST ), (A+ GUARANTEE).
1. A patient is prescribed Clarithromycin for a respiratory infection. The patient is also taking
Simvastatin for hyperlipidemia. What is the primary pharmacokinetic concern regarding this
drug combination?
A. Increased renal excretion of Simvastatin
B. Inhibition of CYP3A4 leading to Simvastatin toxicity
C. Induction of CYP3A4 leading to subtherapeutic Simvastatin levels
D. Decreased absorption of Clarithromycin in the GI tract
Answer: B
Conceptual Explanation: Clarithromycin is a potent inhibitor of the CYP3A4 enzyme
system. Simvastatin is a substrate of CYP3A4. Inhibition leads to increased plasma
concentrations of the statin, significantly increasing the risk of rhabdomyolysis.
2. When calculating the steady-state concentration of a drug, how many half-lives are
typically required to reach approximately 94% of the steady state?
A. 2 half-lives
,B. 3 half-lives
C. 4 half-lives
D. 5 half-lives
Answer: C
Conceptual Explanation: It takes approximately 4 to 5 half-lives for a drug to reach
steady-state plasma concentrations. After 4 half-lives, the concentration is at 93.75% of the
steady state.
3. A patient with a history of heart failure and asthma requires a beta-blocker. Which of the
following would be the most appropriate choice to minimize the risk of bronchospasm?
A. Propranolol
B. Metoprolol succinate
C. Nadolol
D. Carvedilol
Answer: B
Conceptual Explanation: Metoprolol is a cardioselective (Beta-1) blocker. Propranolol,
Nadolol, and Carvedilol are non-selective and block Beta-2 receptors in the lungs, which
can induce bronchospasm in asthmatic patients.
, 4. Which electrolyte abnormality significantly increases the risk of Digoxin toxicity by
enhancing the drug’s binding to the Na+/K+ ATPase pump?
A. Hyperkalemia
B. Hypokalemia
C. Hyponatremia
D. Hypermagnesemia
Answer: B
Conceptual Explanation: Hypokalemia (low potassium) increases the risk of Digoxin
toxicity because potassium and digoxin compete for binding sites on the Na+/K+ ATPase
pump; lower potassium allows more digoxin to bind.
5. A patient is initiated on ACE inhibitor therapy for hypertension. Which mechanism best
explains the development of the characteristic dry, non-productive cough?
A. Increased levels of Angiotensin II
B. Inhibition of renin release
C. Accumulation of bradykinin in the lungs
D. Decreased production of prostaglandins
Answer: C
PHARMACOLOGY FINAL EXAM
QUESTIONS WITH CORRECT ANSWERS
(LATEST ), (A+ GUARANTEE).
1. A patient is prescribed Clarithromycin for a respiratory infection. The patient is also taking
Simvastatin for hyperlipidemia. What is the primary pharmacokinetic concern regarding this
drug combination?
A. Increased renal excretion of Simvastatin
B. Inhibition of CYP3A4 leading to Simvastatin toxicity
C. Induction of CYP3A4 leading to subtherapeutic Simvastatin levels
D. Decreased absorption of Clarithromycin in the GI tract
Answer: B
Conceptual Explanation: Clarithromycin is a potent inhibitor of the CYP3A4 enzyme
system. Simvastatin is a substrate of CYP3A4. Inhibition leads to increased plasma
concentrations of the statin, significantly increasing the risk of rhabdomyolysis.
2. When calculating the steady-state concentration of a drug, how many half-lives are
typically required to reach approximately 94% of the steady state?
A. 2 half-lives
,B. 3 half-lives
C. 4 half-lives
D. 5 half-lives
Answer: C
Conceptual Explanation: It takes approximately 4 to 5 half-lives for a drug to reach
steady-state plasma concentrations. After 4 half-lives, the concentration is at 93.75% of the
steady state.
3. A patient with a history of heart failure and asthma requires a beta-blocker. Which of the
following would be the most appropriate choice to minimize the risk of bronchospasm?
A. Propranolol
B. Metoprolol succinate
C. Nadolol
D. Carvedilol
Answer: B
Conceptual Explanation: Metoprolol is a cardioselective (Beta-1) blocker. Propranolol,
Nadolol, and Carvedilol are non-selective and block Beta-2 receptors in the lungs, which
can induce bronchospasm in asthmatic patients.
, 4. Which electrolyte abnormality significantly increases the risk of Digoxin toxicity by
enhancing the drug’s binding to the Na+/K+ ATPase pump?
A. Hyperkalemia
B. Hypokalemia
C. Hyponatremia
D. Hypermagnesemia
Answer: B
Conceptual Explanation: Hypokalemia (low potassium) increases the risk of Digoxin
toxicity because potassium and digoxin compete for binding sites on the Na+/K+ ATPase
pump; lower potassium allows more digoxin to bind.
5. A patient is initiated on ACE inhibitor therapy for hypertension. Which mechanism best
explains the development of the characteristic dry, non-productive cough?
A. Increased levels of Angiotensin II
B. Inhibition of renin release
C. Accumulation of bradykinin in the lungs
D. Decreased production of prostaglandins
Answer: C
