Which of the following medications is used to treat high blood pressure and belongs to the category of vasodilators?

Lisinopril is recognized as an effective medication for treating high blood pressure and belongs to the category of vasodilators. Its primary action is to inhibit the angiotensin-converting enzyme (ACE), leading to the relaxation of blood vessels. This results in decreased resistance against which the heart must pump, ultimately lowering blood pressure and improving blood flow throughout the body.

Understanding the role of vasodilators is essential in managing hypertension, as they help to widen blood vessels, reducing the workload on the heart. Lisinopril, in particular, also has the additional benefit of providing renal protective effects and improving cardiovascular outcomes in certain patient populations.

In contrast, the other medications listed have different primary uses. Atenolol is a beta-blocker primarily used for hypertension and heart conditions but does not fit the vasodilator category. Furosemide is a diuretic, which helps eliminate excess fluid but does not directly dilate blood vessels. Digoxin is in a class of medications that strengthen heart contractions and is typically used for heart failure and certain arrhythmias, rather than for blood pressure management directly as a vasodilator.