Under what condition is end-diastolic volume (EDV) most likely to increase while ejection fraction decreases?
A)Exercise
B)Sympathetic nerve stimulation
C)(+) Inotropic response
D)Heart failure

Question

Quizplus · Accepted Answer

In heart failure, the heart is often unable to effectively pump blood out, leading to an increase in end-diastolic volume (EDV) while ejection fraction decreases. This is because the weakened heart muscle cannot contract sufficiently to fully empty the ventricles of blood. Exercise, sympathetic nerve stimulation, and a (+) inotropic response would all typically result in an increase in ejection fraction as the heart works harder to pump blood, thus reducing EDV.

Under What Condition Is End-Diastolic Volume (EDV) Most Likely to Increase