Assertion: pacemaker's activity | /r/HasProperty | sensed
Facets:
Source sentences:
text: If no atrial activity is sensed before the ventriculoatrial (VA) interval is completed, an atrial pacing artifact is delivered, which initiates the AV interval.
text: The AV interval is initiated, and if no ventricular activity is sensed before the AV interval terminates, a ventricular pacing artifact is delivered (i.e., P-synchronous ventricular pacing [third cycle]).