International Journal of Arrhythmia  2016;17(1):64-68

doi:10.18501/arrhythmia.2016.011

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

Jeong Wook PARK 1 ; Sung Hwan KIM ; Yong Seog OH ; Chun HWANG

Affiliations

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Keywords

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

Country

Republic of Korea

Language

English

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.