Delayed efficacy of radiofrequency energy can suppress ventricular arrhythmias after a failed ablation procedure. The implant of cardiac defibrillator for arrhythmia-induced cardiomyopathy should be procrastinated after a period of follow-up. Waiting for delayed efficacy is a reasonable choice to reduce the risk of complications associated with aggressive ablative approaches.
Keywords: Idiopathic ventricular arrhythmias; arrhythmia‐induced cardiomyopathy; intramural focus; premature ventricular contraction; radiofrequency delayed efficacy.