Abstract
Papillary muscles (PMs) were reported to be origin of ventricular arrhythmia (VA). Radiofrequency (RF) ablation was reported to be acutely effective in eliminating VA. However, the recurrence rate is high. Recently, cryoablation guided by intracardiac echocardiography, 3-dimensional mapping system, and image integration was introduced as alternative strategy for this challenging ablation. We present a case of ventricular tachycardia originating from anterior PM of left ventricle treated by cryoablation guided only by intracardiac echocardiography.
Highlights
Papillary muscles (PMs) were reported to be origin of ventricular arrhythmia (VA)
Activation mapping by the cryocatheter revealed that the site of origin was at anterior PM of left ventricle (LV) as confirmed by intracardiac echo (ICE) (Figure 2)
Catheter ablation of PM VAs is challenging compared with the other VA in the LV [1]
Summary
Papillary muscles (PMs) were reported to be origin of ventricular arrhythmia (VA). Radiofrequency (RF) ablation was reported to be acutely effective in eliminating VA [1]. Cryoablation was introduced as alternative strategy for this challenging ablation
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