Percutaneous epicardial radiofrequency ablation at the lateral mitral annulus successfully treated sustained monomorphic ventricular tachycardia and normalized right ventricular ejection fraction.
Case Report (n=1)
Ventricular tachycardias originating from the left ventricular epicardium can mimic right ventricular outflow tract VT or ARVC and induce isolated, reversible right ventricular dysfunction.
A 38-year-old man without prior medical history was hospitalized for sustained monomorphic ventricular tachycardia (VT) left bundle branch block pattern with inferior QRS axis resistant to beta blockers. Right ventricular (RV) ejection fraction (EF) was 28%. Left ventricular EF was normal. Right and left endocardial ablation failed. Percutaneous epicardial radiofrequency application at the lateral mitral annulus was successful. The RVEF later normalized. Some VTs originating from the left ventricular epicardium are potential mimickers of benign VTs originating from the ventricular outflow tract (right or left) or arrhythmogenic right ventricular cardiomyopathy VT and they may induce isolated RV dysfunction.
Massoure et al. (Fri,) conducted a case report in Sustained monomorphic ventricular tachycardia (n=1). Percutaneous epicardial radiofrequency ablation was evaluated on Ablation success and normalization of right ventricular ejection fraction. Percutaneous epicardial radiofrequency ablation at the lateral mitral annulus successfully treated sustained monomorphic ventricular tachycardia and normalized right ventricular ejection fraction.