What term describes the volume of blood pumped out by a ventricle with each heartbeat?

The term that describes the volume of blood pumped out by a ventricle with each heartbeat is stroke volume. Stroke volume specifically measures the amount of blood that is ejected from either the right or left ventricle during one cardiac cycle, which is essential for understanding the efficiency of the heart. It plays a crucial role in determining cardiac output, which is the total volume of blood the heart pumps in one minute, calculated by multiplying stroke volume by heart rate.

Understanding stroke volume is vital in the context of cardiovascular health, as it reflects the heart's ability to pump blood effectively in response to the body's demands. Factors such as heart muscle health, preload, afterload, and contractility can all influence stroke volume. Thus, it provides significant insight into a patient's hemodynamic status during assessment and interventions in emergency situations.