atrioventricular (AV) conduction

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a·tri·o·ven·tric·u·lar (AV) con·duc·tion

(ā'trē-ō-ven-trik'yū-lăr kŏn-dŭk'shŭn)
Forward conduction of the cardiac impulse from atria to ventricles via the AV node or any bypass tract, represented in the electrocardiogram by the P-R interval. P-H conduction time is from the onset of the P wave to the first high-frequency component of the His bundle electrogram (normally 119 ± 38 msec); A-H conduction time is from the onset of the first high frequency component of the atrial electrogram to the first high frequency component of the His bundle electrogram (normally 92 ± 38 msec); P-A conduction time is from the onset of the P wave to the onset of the atrial electrogram (normally 27 ± 18 msec).
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