What is the stroke volume (SV) formula?

The formula for stroke volume (SV) is defined as the difference between the end-diastolic volume (EDV) and the end-systolic volume (ESV). Stroke volume represents the amount of blood ejected by the heart with each heartbeat. Understanding this concept is crucial in cardiac physiology as it helps assess heart function and overall cardiovascular health.

In this context, end-diastolic volume refers to the total volume of blood in the ventricle just before it contracts, while end-systolic volume is the volume remaining in the ventricle after contraction. By subtracting ESV from EDV, we can determine the effective volume of blood ejected during heart contraction, which is critical for evaluating cardiac output and overall efficiency of the heart as a pump.

This formula is widely used in clinical practice to assess cardiac performance and guide treatment decisions in various cardiovascular conditions.