Oct 1, 1989

Entrainment of ventricular tachycardia by sinus rhythm

Pacing and Clinical Electrophysiology : PACE
M S KremersJ Passos-Coelho

Abstract

Entrainment of ventricular tachycardia (VT) may be manifest as fixed and progressive QRS fusion with ventricular and, rarely, atrial pacing. Only a single example of spontaneous VT entrainment by another rhythm, rapid atrioventricular nodal tachycardia, has been reported. This article describes an example of fixed and progressive QRS fusion between conducted sinus rhythm and VT consistent with entrainment. In contrast to entrainment with pacing, entrainment of VT by sinus rhythm occurred with drug-mediated arrhythmia slowing and demonstrated progressive QRS fusion at a constant cycle length. However, it did not demonstrate unfused but entrained QRS complexes. The resulting short PR interval and wide QRS mimicked a preexcited rhythm.

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Citations

Mentioned in this Paper

Complex (molecular entity)
Sinus - General Anatomical Term
Cardiac Conduction System
Electrophysiology (Science)
Tachycardia, Ventricular
Heart Ventricle
Heart Atrium
Cardiac Pacing, Artificial
Sinus brand of acetaminophen-pseudoephedrine
Cutaneous Fistula

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