What effect does Lisinopril have in relation to serum aldosterone levels?

Lisinopril is classified as an ACE (Angiotensin-Converting Enzyme) inhibitor, and its primary mechanism of action involves the inhibition of the ACE enzyme, which converts angiotensin I to angiotensin II. Angiotensin II is a key regulator of blood pressure and plays a significant role in stimulating the adrenal glands to produce aldosterone, a hormone that helps regulate sodium and potassium levels, as well as blood pressure.

By inhibiting the formation of angiotensin II, Lisinopril leads to reduced stimulation of aldosterone secretion from the adrenal cortex. This results in decreased serum aldosterone levels. The reduction in aldosterone can contribute to various beneficial effects, such as decreased sodium retention, reduced blood volume, and subsequently lower blood pressure, which is particularly advantageous in treating conditions like hypertension and heart failure.

In this context, the action of Lisinopril directly aligns with its role in decreasing serum aldosterone, making this choice correct. The other options reflect misunderstandings of the drug's pharmacological effects as it does not lead to an increase or have no effect on aldosterone levels.