<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> <P> In cardiovascular physiology, end - diastolic volume (EDV) is the volume of blood in the right and / or left ventricle at end load or filling in (diastole) or the amount of blood in the ventricles just before systole . Because greater EDVs cause greater distention of the ventricle, EDV is often used synonymously with preload, which refers to the length of the sarcomeres in cardiac muscle prior to contraction (systole). An increase in EDV increases the preload on the heart and, through the Frank - Starling mechanism of the heart, increases the amount of blood ejected from the ventricle during systole (stroke volume). </P> <Table> <Tr> <Th_colspan="3"> Ventricular volumes <Ul> <Li> view </Li> <Li> talk </Li> <Li> </Li> </Ul> </Th> </Tr> <Tr> <Th> Measure </Th> <Th> Right ventricle </Th> <Th> Left ventricle </Th> </Tr> <Tr> <Td> End - diastolic volume </Td> <Td> 144 mL (± 23 mL) </Td> <Td> 142 mL (± 21 mL) </Td> </Tr> <Tr> <Td> End - diastolic volume / body surface area (mL / m) </Td> <Td> 78 mL / m (± 11 mL / m) </Td> <Td> 78 mL / m (± 8.8 mL / m) </Td> </Tr> <Tr> <Td> End - systolic volume </Td> <Td> 50 mL (± 14 mL) </Td> <Td> 47 mL (± 10 mL) </Td> </Tr> <Tr> <Td> End - systolic volume / body surface area (mL / m) </Td> <Td> 27 mL / m (± 7 mL / m) </Td> <Td> 26 mL / m (± 5.1 mL / m) </Td> </Tr> <Tr> <Td> Stroke volume </Td> <Td> 94 mL (± 15 mL) </Td> <Td> 95 mL (± 14 mL) </Td> </Tr> <Tr> <Td> Stroke volume / body surface area (mL / m) </Td> <Td> 51 mL / m (± 7 mL / m) </Td> <Td> 52 mL / m (± 6.2 mL / m) </Td> </Tr> <Tr> <Td> Ejection fraction </Td> <Td> 66% (± 6%) </Td> <Td> 67% (± 4.6%) </Td> </Tr> <Tr> <Td> Heart rate </Td> <Td> 60--100 bpm </Td> <Td> 60--100 bpm </Td> </Tr> <Tr> <Td> Cardiac output </Td> <Td> 4.0--8.0 L / minute </Td> <Td> 4.0--8.0 L / minute </Td> </Tr> </Table>

Volume and pressure inside the left ventricle at the end of diastole is referred to as