A 40-year-old patient with hypertension is prescribed lisinopril. Which class of antihypertensive
A 40-year-old patient with hypertension is prescribed lisinopril. Which class of antihypertensive drugs does lisinopril belong to?
A. Angiotensin II receptor blockers (ARBs)
B. Angiotensin-converting enzyme inhibitors (ACEIs)
C. Beta-adrenergic blockers
D. Calcium channel blockers (CCBs)
Answer: B
Explanation: Lisinopril is an angiotensin-converting enzyme inhibitor (ACEI). It inhibits ACE, which converts angiotensin I to angiotensin II (a potent vasoconstrictor), thereby reducing blood pressure. ARBs (e.g., losartan) block angiotensin II receptors (A is incorrect). Beta-blockers (e.g., metoprolol) block beta-adrenergic receptors (C is incorrect). CCBs (e.g., amlodipine) block calcium channels (D is incorrect).
