atrioventricular nodal extrasystole

atrioventricular nodal extrasystole

n.
A premature beat arising from the AV node and leading to a simultaneous or almost simultaneous contraction of atria and ventricles.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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