Catheter ablation of ventricular tachycardia originating from the left posterior papillary muscle guided by the shadow of a multipolar catheter |
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Authors: | Shiro Nakahara Noritaka Toratani Kan Takayanagi |
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Affiliation: | Department of Cardiology, Dokkyo University Koshigaya Hospital, Saitama, Japan. |
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Abstract: | A 62-year-old man without structural heart disease underwent electrophysiological testing for ventricular tachycardia (VT). Hemodynamically unstable VT was induced after isoproterenol (ISP) provocation. Electroanatomical mapping using a multipolar catheter identified the earliest activation originating from the posterior papillary muscle (PPM) where prepotentials preceding the local ventricular electrogram were observed. Irrigated radiofrequency current guided by the shadow of a multipolar catheter eliminated the VT. This case suggested that multipolar catheters may be helpful for identifying tachycardia origins arising from the PPM. |
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Keywords: | ventricular tachycardia papillary muscle radiofrequency catheter ablation |
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