Monomorphic ventricular tachycardia: a late complication of percutaneous alcohol septal ablation for hypertrophic cardiomyopathy.

Percutaneous alcohol septal ablation has emerged as a promising treatment option for patients with symptomatic hypertrophic obstructive cardiomyopathy. Although the procedure involves an alcohol-induced myocardial infarction and results in a substrate potentially conducive to re-entrant tachyarrhythmias, late-occurring ventricular arrhythmias have not been described. We report a case of monomorphic ventricular tachycardia occurring several days after alcohol septal ablation. Patients with hypertrophic cardiomyopathy undergoing alcohol septal ablation should be considered for prophylactic placement of implantable cardioverter defibrillator.