atrial fusion beat

Medical Dictionary

atrial fusion beat n.
A pulsation occurring when the atria of the heart are activated partly by a sinus impulse and partly by a retrograde impulse from the atrioventricular node or ventricle.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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