Cryoablation for Ventricular Tachycardia Originating from Anterior Papillary Muscle of Left Ventricle Guided by Intracardiac Echocardiography

Cryoablation for Ventricular Arrhythmias Arising From the Papillary Muscles of the Left Ventricle Guided by Intracardiac Echocardiography and Image Integration

METHODS Ten patients (70% men; median age: 38 years [range: 34 to 45 years]) with drug-refractory premature ventricular contractions or ventricular tachycardia underwent catheter cryoablation. VAs were localized using 3-dimensional (3D) mapping, multidetector computed tomography, and intracardiac echocardiography, with arrhythmia foci being mapped at either the anterolateral PM or posteromedial...

Results of Cryoenergy and Radiofrequency-Based Catheter Ablation for Treating Ventricular Arrhythmias Arising From the Papillary Muscles of the Left Ventricle, Guided by Intracardiac Echocardiography and Image Integration.

BACKGROUND Catheter radiofrequency ablation of ventricular arrhythmias (VAs) arising from the left ventricle's papillary muscles has been associated with inconsistent results. The use of cryoenergy versus radiofrequency has not been compared yet. This study compares outcomes and complications of catheter ablation of VA from the papillary muscles of the left ventricle with either cryoenergy or r...

Successful catheter ablation of idiopathic ventricular tachycardia originating from the top of the left ventricular posterior papillary muscle near the chordae tendineae: Usefulness of intracardiac three-dimensional echocardiography

Hiroshi Kawakami, MD, Takashi Noda, MD, PhD, Koji Miyamoto, MD, Kazuhiro Satomi, MD, PhD, Wataru Shimizu, MD, PhD, Kengo F Kusano, MD, PhD From the Division of Arrhythmia and Electrophysiology, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan, Department of Cardiology, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan, and Department ...

Ablation of ventricular tachycardia originating from the papillary muscle of the left ventricle early after heart transplantation.

Catheter Ablation of Ventricular Tachycardia Originating from the Left Posterior Papillary Muscle Guided by the Shadow of a Multipolar Catheter

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...