Definition: conduction of the cardiac impulse through the ventricular myocardium, represented by the QRS complex in the electrocardiogram. HR conduction time is from the onset of the first high frequency component of the His bundle electrogram to the onset of the QRS complex of the surface electrocardiogram (normally 43 ± 12 msec); HV conduction time is from the onset of the first high-frequency component of the His bundle electrogram to the onset of the ventricular electrogram (normally approximates the HR interval but may be a little shorter).
Synonym(s): ventricular conduction
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