atrioventricular conduction defect
atrioventricular conduction defectCardiology Any derangement-block or delay in electric conduction through the AV node or bundle of His above the bifurcation of the AV fascicle; an ACD is localized by a 12-lead EKG. See Atrioventricular block.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.