atrial kick

a·tri·al kick

the priming force contributed by atrial contraction immediately before ventricular systole that acts to increase the efficiency of ventricular ejection due to acutely increased preload.

atrial kick

Atrial systole Cardiology The contraction of the atrium, which accounts for 5-30% of cardiac output; it appears as an abrupt notch in the pressure curve in the ventricular outflow tract, and is typical of hypertrophic cardiomyopathy–formerly idiopathic hypertrophic subaortic stenosis
References in periodicals archive ?
It did not manage the loss of the atrial kick or the risk for the development of thromboemboli (8).
So, the passive filling and atrial kick occur simultaneously, resulting in shortened LV filling time and decreased preloading of LV.
Studies in patients without MI have demonstrated that loss of atrial kick decreases left ventricular output by 15 to 20 percent.

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