atrial systole

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Related to atrial systole: atrial diastole, Ventricular systole


the contraction, or period of contraction, of the heart, especially of the ventricles, during which blood is forced into the aorta and pulmonary artery. adj., adj systol´ic.
atrial systole contraction of the atria by which blood is forced into the ventricles; it precedes the true or ventricular systole and is indicated by the fourth heart sound.
extra systole see extrasystole.
ventricular systole contraction of the ventricles, forcing blood into the aorta and pulmonary artery.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

a·tri·al sys·to·le

contraction of the atria.
Synonym(s): auricular systole
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Complications may, however, occur after cardioversion and we do anticoagulate our patients longer than some[15], but we think that this is justified by the delay in restoration of atrial systole experienced by some patients[16] and because the risk of arrhythmia recurrence is highest in the first month.
LA maximum volume (Vmax) at the end-systolic phase, LA minimum volume (Vmin) at the end-diastolic phase and LA volume before atrial systole (Vp) were measured and calculated with adjustment to body surface area.
However, atrial systole is of greater importance for left ventricular filling in patients with MI (11).