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burst pacing. Also found in: Dictionary, Thesaurus, Wikipedia. fast pacing. A term defined in the context of implantable pacemakers for the deliveryâe.g., atrial burst pacingâof rapid, multiple electrical pulses, to pace the heart faster than its intrinsic rate. Fast pacing is used for ventricular tachycardia, to try to break the tachycardia before it progresses to ventricular fibrillation. burst pacing.
The tast 12 beats of an atrial pacing train at a cycle length of 240 msec aredepicted. The long arrows indicate conduction of pacing stimuti to the ventricles. Beginning with ttie third pacing stimulusshown, the AV time progressively increases until the sixth stimulus blocks.urves relating the ventricular pacing cycle letigth to the VA interval on the last paced beat in patients with eachmechanism of PSVT. The atrial pacing cycle tength is shown on the X axis and the VA intervat on the last paced beat at eachcycte length on the Y axis.