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[[A-h conduction time]] --> atrioventricular conduction

forward conduction of the cardiac impulse from atria to ventricles via the a-v 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).