cardiac cycle

(redirected from Ventricular systole)
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Related to Ventricular systole: cardiac cycle, ventricular diastole

cardiac cycle

[′kärd·ē‚ak ‚sī·kəl]
(physiology)
The sequence of events in the heart between the start of one contraction and the start of the next.
References in periodicals archive ?
And if it takes more energy for the ventricles to relax than to contract, would it be reasonable to believe that we die in ventricular systole rather than in ventricular diastole?
As the sinus rate slows and the P waves slip into the idioventricular QRSs, the absence of a preceding atrial contraction and the lack of synchronous ventricular systole cause a fall in stroke volume that activates the baroreceptors.
The possible mechanisms involved in this phenomenon include arterial baroreceptor-mediated changes in vagal tone, activation of the Bainbridge reflex by the ventricular contraction, mechanical traction on the atria, and perhaps an increase in blood flow to the sinoatrial node during ventricular systole.
In the first case posterobasally located akinetic area showed relatively wide neck and paradoxical movement with ventricular systole.

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