EDV (End-Diastolic Volume)

End-Diastolic Volume (EDV) is the amount of blood in the heart's ventricle (specifically the left ventricle) at the end of the relaxation phase, called diastole, just before the heart contracts again. It represents the maximum volume the ventricle holds during each heartbeat, influenced by venous return and ventricular compliance. EDV is important because it determines how much blood the heart pumps out during each beat, known as stroke volume. A healthy EDV helps ensure effective blood circulation, delivering oxygen and nutrients throughout the body.