What is the primary function of Angiotensin Converting Enzyme Inhibitors?

Angiotensin Converting Enzyme (ACE) inhibitors primarily function to treat high blood pressure and heart failure. These medications work by inhibiting the enzyme responsible for converting angiotensin I to angiotensin II, which is a potent vasoconstrictor. By blocking this conversion, ACE inhibitors cause blood vessels to relax and widen, leading to a decrease in blood pressure.

Additionally, by lowering the workload on the heart and reducing the volume of blood that the heart must pump, ACE inhibitors can effectively help manage symptoms of heart failure. This dual mechanism of action makes ACE inhibitors a cornerstone treatment for both hypertension and heart failure.

Other options, such as blocking epinephrine or increasing calcium entry into heart cells, are not direct functions of ACE inhibitors. Similarly, promoting cholesterol levels is unrelated to the role of ACE inhibitors, as they are not designed to influence lipid profiles. Understanding the distinct role of ACE inhibitors is crucial for recognizing their importance in cardiovascular health management.