The electrocardiogram is most useful in determining which component of cardiac output
A)stroke volume
B)end-diastolic volume
C)ejection fraction
D)heart rate

Question

Quizplus · Accepted Answer

The electrocardiogram (ECG) measures the electrical activity of the heart, which is primarily responsible for setting the heart rate. Therefore, the ECG is most useful in determining heart rate, which is a component of cardiac output. The other options mentioned (stroke volume, end-diastolic volume, and ejection fraction) are typically measured through diagnostic tests such as echocardiography or cardiac catheterization.

The Electrocardiogram Is Most Useful in Determining Which Component of Cardiac