What is the primary use of inotropes?

Inotropes are primarily used to increase the contractility of the heart muscle, which enhances cardiac output. These medications work by improving the strength of the heart's contractions, making them particularly useful in conditions where the heart is unable to pump effectively, such as in certain types of heart failure or cardiogenic shock. By increasing contractility, inotropes help ensure that more blood is pumped with each heartbeat, thereby improving overall circulation and tissue perfusion. This is critical in situations where the heart’s pumping ability is compromised.

The other options do not accurately reflect the primary use of inotropes. While managing blood pressure, decreasing heart rate, and controlling arrhythmias are important in cardiac care, they do not capture the fundamental role of inotropes in enhancing heart muscle function and output.