Which phase of the cardiac cycle follows immediately after the beginning of the QRS wave?
Immediately after the QRS wave, the ventricles begin to contract, and the first phase that occurs is isovolumic contraction. Isovolumic contraction occurs before the ejection phase and increases the ventricular pressure enough to mechanically open the aoic and pulmonary valves.
Isovolumic relaxation
Atrial systole
Diastasis
Isovolumic contraction
Cardiac Cycle