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HESI PHARMACOLOGY FINAL EXAM PREP 2025/2026
130+ PRACTICE QUESTIONS WITH CORRECT
ANSWERS & RATIONALES, VERIFIED AND ALREADY
RATED A+
1. Which class of drugs is the first-line treatment for hypertension in most adults?
A. Calcium channel blockers
B. ACE inhibitors
C. β-blockers
D. Thiazide diuretics
Correct Answer: D. Thiazide diuretics
Rationale: Thiazides (e.g., hydrochlorothiazide) are widely recommended first-
line for essential hypertension due to efficacy, low cost, and proven cardiovascular
outcomes.
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2. A patient on warfarin (Coumadin) requires regular monitoring of which lab
value?
A. Platelet count
B. aPTT
C. PT/INR
D. Bleeding time
Correct Answer: C. PT/INR
Rationale: Warfarin inhibits vitamin K–dependent clotting factors; prothrombin
time (PT) and international normalized ratio (INR) are used to monitor dosage and
bleeding risk.
3. Which adverse effect is most commonly associated with ACE inhibitors (e.g.,
lisinopril)?
A. Bradycardia
B. Persistent dry cough
C. Hypoglycemia
D. Peripheral neuropathy
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Correct Answer: B. Persistent dry cough
Rationale: ACE inhibitors increase bradykinin levels, which can lead to a
characteristic dry cough in some patients.
4. Which antibiotic class works by inhibiting bacterial cell wall synthesis?
A. Fluoroquinolones
B. Macrolides
C. Penicillins
D. Tetracyclines
Correct Answer: C. Penicillins
Rationale: Penicillins and other β-lactams bind to PBPs, disrupting synthesis of
peptidoglycan cell wall—key mechanism of bactericidal activity.
5. What is the antidote for acetaminophen (Tylenol) overdose?
A. Vitamin K
B. Naloxone
C. N-acetylcysteine (NAC)
D. Flumazenil
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Correct Answer: C. N-acetylcysteine (NAC)
Rationale: NAC replenishes glutathione to detoxify NAPQI, the toxic metabolite
of acetaminophen, thereby preventing hepatic injury.
6. A patient receiving digoxin exhibits nausea, visual halos, and bradycardia. What
is the most likely cause?
A. Beta-blocker toxicity
B. Digoxin toxicity
C. ACE inhibitor side effects
D. Hypomagnesemia
Correct Answer: B. Digoxin toxicity
Rationale: Visual disturbances (e.g., yellow-green halos), GI upset, and
bradycardia are classic signs of digoxin toxicity; monitor serum levels carefully.
7. Which medication is considered the first-line treatment for an acute asthma
exacerbation?
A. Ipratropium bromide
B. Short-acting β₂-agonist (albuterol)
HESI PHARMACOLOGY FINAL EXAM PREP 2025/2026
130+ PRACTICE QUESTIONS WITH CORRECT
ANSWERS & RATIONALES, VERIFIED AND ALREADY
RATED A+
1. Which class of drugs is the first-line treatment for hypertension in most adults?
A. Calcium channel blockers
B. ACE inhibitors
C. β-blockers
D. Thiazide diuretics
Correct Answer: D. Thiazide diuretics
Rationale: Thiazides (e.g., hydrochlorothiazide) are widely recommended first-
line for essential hypertension due to efficacy, low cost, and proven cardiovascular
outcomes.
,2 | Page
2. A patient on warfarin (Coumadin) requires regular monitoring of which lab
value?
A. Platelet count
B. aPTT
C. PT/INR
D. Bleeding time
Correct Answer: C. PT/INR
Rationale: Warfarin inhibits vitamin K–dependent clotting factors; prothrombin
time (PT) and international normalized ratio (INR) are used to monitor dosage and
bleeding risk.
3. Which adverse effect is most commonly associated with ACE inhibitors (e.g.,
lisinopril)?
A. Bradycardia
B. Persistent dry cough
C. Hypoglycemia
D. Peripheral neuropathy
,3 | Page
Correct Answer: B. Persistent dry cough
Rationale: ACE inhibitors increase bradykinin levels, which can lead to a
characteristic dry cough in some patients.
4. Which antibiotic class works by inhibiting bacterial cell wall synthesis?
A. Fluoroquinolones
B. Macrolides
C. Penicillins
D. Tetracyclines
Correct Answer: C. Penicillins
Rationale: Penicillins and other β-lactams bind to PBPs, disrupting synthesis of
peptidoglycan cell wall—key mechanism of bactericidal activity.
5. What is the antidote for acetaminophen (Tylenol) overdose?
A. Vitamin K
B. Naloxone
C. N-acetylcysteine (NAC)
D. Flumazenil
, 4 | Page
Correct Answer: C. N-acetylcysteine (NAC)
Rationale: NAC replenishes glutathione to detoxify NAPQI, the toxic metabolite
of acetaminophen, thereby preventing hepatic injury.
6. A patient receiving digoxin exhibits nausea, visual halos, and bradycardia. What
is the most likely cause?
A. Beta-blocker toxicity
B. Digoxin toxicity
C. ACE inhibitor side effects
D. Hypomagnesemia
Correct Answer: B. Digoxin toxicity
Rationale: Visual disturbances (e.g., yellow-green halos), GI upset, and
bradycardia are classic signs of digoxin toxicity; monitor serum levels carefully.
7. Which medication is considered the first-line treatment for an acute asthma
exacerbation?
A. Ipratropium bromide
B. Short-acting β₂-agonist (albuterol)
