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KMID : 1011920130140040034
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International Journal of Arrhythmia
2013 Volume.14 No. 4 p.34 ~ p.39
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Ventricular Tachycardia Ablation in a Patient With Arrhythmogenic Right Ventricular Cardiomyopathy
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Park Kyoung-Min
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Abstract
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Tachycardias in the setting of arrhythmogenic right ventricular cardiomyopathy (ARVC) are inducible with programmed stimulation and can be entrained. Most sites of origin of ventricular tachycardia (VT) cluster within the low-voltage peritricuspid and/or peripulmonic regions, usually within 2-3 cm of the valve’s orifice. In this case, unstable VTs were induced by ventricular extrastimulus, and substrate mapping and pace-mapping were used to delineate the region of low-voltage electrogram (EGM). It was also used to identify putative components of the reentry circuits at the anterior right ventricular (RV) free-wall. With pace-mapping, we were able to identify sites with good pace-maps around the tricuspid valve (TV) annulus. Radiofrequency application was delivered around these sites. Eventually, the VTs could no longer be induced by any pacing maneuvers.
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KEYWORD
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pace-mapping , tachycardia
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