SA conduction time

SA conduction time

the time required for an impulse to travel from the sinus node to the atrial musculature. It is measured from the sinoatrial (SA) deflection in a SA nodal electrocardiogram to the beginning of the P wave in a bipolar record, or to the beginning of the high right atrial electrogram in a unipolar record.
References in periodicals archive ?
Also, analogous to the situation in type II AV block, with type II SA block, SA conduction time does not increase before the nonconducted impulse; the P-P intervals do not decrease; and the pauses are exact multiples of the basic P-P interval (1).
The SA conduction times increased in progressively smaller increments so that the P-P intervals became progressively shorter, and the P-P interval containing the nonconducted impulse was shorter than 2 times any single P-P interval.