Int J Arrhythm.  2016 Mar;17(1):64-68. 10.18501/arrhythmia.2016.011.

Pitfalls of Atrial Advancement Using a Ventricular Extra-stimulus During Supraventricular Tachycardia

Affiliations
  • 1Cardiocerebrovascular Center, Seoul St. Mary's Hospital, Seoul, Korea. oys@catholic.ac.kr
  • 2Division of Cardiology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
  • 3Utah Valley Regional Medical Center, Provo, Utah, USA.

Abstract

The delivery of single His-refractory ventricular extra-stimulus during supraventricular tachycardia is useful to identify the mechanism of the tachycardia. We present the different responses based on the ventricular extra-stimulus site. Our findings demonstrate that the atrial activation via an accessory pathway was not advanced based on the ventricular pacing site. Therefore, atrioventricular tachycardia could masquerade as atrioventricular nodal reentrant tachycardia.

Keyword

Cardiac Mapping; Tachycardia, Supraventricular; Tachycardia, Atrioventricular Nodal Reentry

MeSH Terms

Tachycardia
Tachycardia, Atrioventricular Nodal Reentry
Tachycardia, Supraventricular*
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