(Science: cardiology) a conduction disturbance that results in the inappropriate delay (or complete inability) of a electrical impulse, generated in the atria, to reach the ventricles (via the atrioventricular node).
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During a complete bundle branch block, many ectopic pacemakers in the ventricles may take over the action of the SA ... The ventricles relax B. The aorta relaxes C. The semi lunar valaves open D. The atrioventricular valves open
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