Pharmacology · single question
What is the mechanism of action of lisinopril?
Show answer and explanation
Correct answer: C. Inhibits vasoconstriction and decreases cardiac workload
Lisinopril is an ACE inhibitor — it prevents angiotensin II formation, causing vasodilation and reduced cardiac workload.
- A. That describes a diuretic, not an ACE inhibitor. (Note: the recall sheet highlighted this — it is incorrect for lisinopril.)
- B. That is the mechanism of calcium-channel blockers (e.g., amlodipine), not lisinopril.
- C. Correct. Lisinopril is an ACE inhibitor: it blocks conversion of angiotensin I to angiotensin II, reducing vasoconstriction and afterload.