The reflected wave returns to the aorta during systole rather than diastole, increasing systolic work even more and reducing diastolic pressure, on which coronary flow depends.
Younger people have a highly distensible aorta, which expands during systole and minimises any subsequent rise in blood pressure.
During systole , the rise from left ventricular end-diastole pressure to end-aortic diastolic pressure is decreased; thus the aortic valve opens earlier and stays open longer.
A newer classification scheme for heart failure is based not on left or right side failure but rather on whether the failure occurs during systole or diastole.
They also recommend using both systolic and diastolic blood pressures for diagnosis and treatment at all ages.
In addition, many patients with systolic dysfunction have elements of diastolic dysfunction.
Pulse pressure was measured as systolic arterial pressure minus diastolic arterial pressure.
The measurement is written one above or before the other, with the systolic number on top and the diastolic number on the bottom.
The passive, elastic recoil between systoles maintains the blood pressure, smooths the flow of blood, and forces blood through the coronary arteries while the ventricles are filling.
As data is collected for one systolic period, a small amount of flow during diastole will be excluded.