Electroanatomical Mapping‐Guided Endocardial and Epicardial Ablation of Sustained Ventricular Tachycardia Originating From Alcohol Septal Ablation‐Induced Scar in a Patient With Hypertrophic Obstructive Cardiomyopathy |
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Authors: | HIROSHIGE MURATA MD YASUSHI MIYAUCHI MD TAKASHI NITTA MD KYOICHI MIZUNO MD |
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Institution: | 1. Division of Cardiology, Department of Internal Medicine;2. Division of Cardiovascular Surgery, Department of Surgery, Nippon Medical School, Japan |
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Abstract: | Ventricular Tachycardia After Alcohol Septal Ablation. A 76‐year‐old female developed 2 different ventricular tachycardias (VTs) 5 years after alcohol septal ablation (ASA) for symptomatic hypertrophic obstructive cardiomyopathy. VT#1 was a small macroreentry at the anterior border of the low‐voltage zone, suggesting the ASA‐scar and eliminated by endocardial ablation at a site recording fractionated potentials covering the mid‐diastolic and presystolic periods. VT#2 was a focal VT and eliminated by epicardial cryoablation at the basal posterior left ventricle, suggesting the posterior border of the ASA‐scar. Using the electroanatomical mapping, we demonstrated that the mechanism of the VTs was reentry at the edge of the ASA‐scar. (J Cardiovasc Electrophysiol, Vol. 21, pp. 1296‐1299, November 2010) |
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Keywords: | alcohol septal ablation catheter ablation epicardial mapping hypertrophic obstructive cardiomyopathy ventricular tachycardia |
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