End-diastolic volume

End-diastolic volume (EDV) is the amount of blood in your heart's main chamber (the ventricle) right before it contracts to pump blood out. Think of it as the heart's filling state just before it squeezes; a higher EDV means the ventricle is more filled with blood. This volume affects how much blood is pumped out with each beat, known as stroke volume. Maintaining an appropriate EDV is crucial for efficient heart function and blood circulation. It varies based on factors like blood volume, heart rate, and venous return.