Advanced Pharmacology Practice Exam
100 Most Tested Questions Collection
& Verified Detailed Answers | Tutor
Verified Success Exam) Graded A+
Question 1
A patient taking warfarin is prescribed trimethoprim-
sulfamethoxazole for a urinary tract infection. Which adverse effect
is most likely?
A. Reduced anticoagulation
B. Increased risk of bleeding
C. Increased platelet production
D. Reduced INR
Answer: B. Increased risk of bleeding
Rationale: Trimethoprim-sulfamethoxazole inhibits warfarin
metabolism, increasing INR and significantly raising the risk of
bleeding. Patients require INR monitoring and possible warfarin dose
adjustment.
Question 2
Which antihypertensive medication is contraindicated during
pregnancy?
A. Methyldopa
B. Labetalol
C. Nifedipine
,D. Lisinopril
Answer: D. Lisinopril
Rationale: ACE inhibitors such as lisinopril are teratogenic and can
cause fetal renal failure, oligohydramnios, skull abnormalities, and
fetal death, particularly during the second and third trimesters.
Question 3
A patient develops persistent coughing after starting enalapril. Which
mediator is primarily responsible?
A. Histamine
B. Bradykinin
C. Dopamine
D. Acetylcholine
Answer: B. Bradykinin
Rationale: ACE inhibition decreases the breakdown of bradykinin,
resulting in its accumulation. Elevated bradykinin is responsible for
the characteristic dry cough and may contribute to angioedema.
Question 4
Which statin carries the greatest risk of myopathy when
administered with gemfibrozil?
A. Pravastatin
B. Simvastatin
C. Fluvastatin
D. Pitavastatin
,Answer: B. Simvastatin
Rationale: Gemfibrozil inhibits statin metabolism and hepatic uptake,
markedly increasing simvastatin concentrations and the risk of severe
myopathy and rhabdomyolysis.
Question 5
A patient receiving digoxin presents with nausea, yellow vision, and
bradycardia. Which electrolyte abnormality most likely contributed?
A. Hypernatremia
B. Hypercalcemia
C. Hypokalemia
D. Hypermagnesemia
Answer: C. Hypokalemia
Rationale: Low potassium enhances digoxin binding to the Na⁺/K⁺-
ATPase pump, increasing toxicity. Symptoms include gastrointestinal
upset, visual disturbances, and cardiac arrhythmias.
Question 6
Which beta-blocker is considered most cardioselective?
A. Propranolol
B. Nadolol
C. Atenolol
D. Carvedilol
Answer: C. Atenolol
, Rationale: Atenolol selectively blocks β1 receptors at therapeutic
doses, producing fewer bronchoconstrictive effects than nonselective
beta-blockers.
Question 7
Which anticoagulant directly inhibits thrombin (Factor IIa)?
A. Apixaban
B. Rivaroxaban
C. Dabigatran
D. Enoxaparin
Answer: C. Dabigatran
Rationale: Dabigatran is an oral direct thrombin inhibitor. Apixaban
and rivaroxaban inhibit Factor Xa, while enoxaparin primarily
enhances antithrombin-mediated inhibition of Factor Xa.
Question 8
A patient taking metformin develops severe lactic acidosis. Which
condition most likely precipitated this complication?
A. Hyperthyroidism
B. Severe renal impairment
C. Hyperlipidemia
D. Iron deficiency anemia
Answer: B. Severe renal impairment
Rationale: Metformin is eliminated through the kidneys. Significant
renal dysfunction increases drug accumulation and the rare but
serious risk of lactic acidosis.
100 Most Tested Questions Collection
& Verified Detailed Answers | Tutor
Verified Success Exam) Graded A+
Question 1
A patient taking warfarin is prescribed trimethoprim-
sulfamethoxazole for a urinary tract infection. Which adverse effect
is most likely?
A. Reduced anticoagulation
B. Increased risk of bleeding
C. Increased platelet production
D. Reduced INR
Answer: B. Increased risk of bleeding
Rationale: Trimethoprim-sulfamethoxazole inhibits warfarin
metabolism, increasing INR and significantly raising the risk of
bleeding. Patients require INR monitoring and possible warfarin dose
adjustment.
Question 2
Which antihypertensive medication is contraindicated during
pregnancy?
A. Methyldopa
B. Labetalol
C. Nifedipine
,D. Lisinopril
Answer: D. Lisinopril
Rationale: ACE inhibitors such as lisinopril are teratogenic and can
cause fetal renal failure, oligohydramnios, skull abnormalities, and
fetal death, particularly during the second and third trimesters.
Question 3
A patient develops persistent coughing after starting enalapril. Which
mediator is primarily responsible?
A. Histamine
B. Bradykinin
C. Dopamine
D. Acetylcholine
Answer: B. Bradykinin
Rationale: ACE inhibition decreases the breakdown of bradykinin,
resulting in its accumulation. Elevated bradykinin is responsible for
the characteristic dry cough and may contribute to angioedema.
Question 4
Which statin carries the greatest risk of myopathy when
administered with gemfibrozil?
A. Pravastatin
B. Simvastatin
C. Fluvastatin
D. Pitavastatin
,Answer: B. Simvastatin
Rationale: Gemfibrozil inhibits statin metabolism and hepatic uptake,
markedly increasing simvastatin concentrations and the risk of severe
myopathy and rhabdomyolysis.
Question 5
A patient receiving digoxin presents with nausea, yellow vision, and
bradycardia. Which electrolyte abnormality most likely contributed?
A. Hypernatremia
B. Hypercalcemia
C. Hypokalemia
D. Hypermagnesemia
Answer: C. Hypokalemia
Rationale: Low potassium enhances digoxin binding to the Na⁺/K⁺-
ATPase pump, increasing toxicity. Symptoms include gastrointestinal
upset, visual disturbances, and cardiac arrhythmias.
Question 6
Which beta-blocker is considered most cardioselective?
A. Propranolol
B. Nadolol
C. Atenolol
D. Carvedilol
Answer: C. Atenolol
, Rationale: Atenolol selectively blocks β1 receptors at therapeutic
doses, producing fewer bronchoconstrictive effects than nonselective
beta-blockers.
Question 7
Which anticoagulant directly inhibits thrombin (Factor IIa)?
A. Apixaban
B. Rivaroxaban
C. Dabigatran
D. Enoxaparin
Answer: C. Dabigatran
Rationale: Dabigatran is an oral direct thrombin inhibitor. Apixaban
and rivaroxaban inhibit Factor Xa, while enoxaparin primarily
enhances antithrombin-mediated inhibition of Factor Xa.
Question 8
A patient taking metformin develops severe lactic acidosis. Which
condition most likely precipitated this complication?
A. Hyperthyroidism
B. Severe renal impairment
C. Hyperlipidemia
D. Iron deficiency anemia
Answer: B. Severe renal impairment
Rationale: Metformin is eliminated through the kidneys. Significant
renal dysfunction increases drug accumulation and the rare but
serious risk of lactic acidosis.
