The interval from the high frequency component of the atrial electrogram to the onset of the His bundle signal, the AH interval, is 70 ms. This represents the time required for the impulse to traverse the AV node. The interval from the high frequency component of the His bundle electrogram to the onset of the ventricular complex, the HV interval, is 50 ms and represents the time required for the impulse to travel through the intraventricular conducting system to activate the ventricular myocardium.
