Premature ventricular complex site of origin and ablation outcomes in patients with prior myocardial infarction.

Background: Frequent premature ventricular complexes (PVCs) are common after a myocardial infarction (MI), but data on PVC ablation in this population are limited.

Objective: The purpose of this study was to analyze data on PVC ablation in post-MI patients.

Methods: Three hundred thirty-two patients with frequent PVCs and left ventricular (LV) dysfunction were prospectively studied.

Antitachycardia pacing for shock prevention in patients with hypertrophic cardiomyopathy and ventricular tachycardia.

Background: Hypertrophic cardiomyopathy (HCM) carries an increased risk of sudden death due to ventricular arrhythmias (VAs). The implantable cardioverter-defibrillator (ICD) is a well-established therapy for treatment of VA. Monomorphic ventricular tachycardias (MVTs) are frequent in HCM patients and suitable for antitachycardia pacing (ATP) termination.

Influence of baseline QRS on the left ventricular ejection fraction recovery after frequent premature ventricular complex ablation.

Aims: Frequent premature ventricular complexes (PVCs) can induce or worsen left ventricular systolic dysfunction. We aimed to investigate the influence of the baseline QRS in the response after PVC ablation in patients with depressed left ventricular ejection fraction (LVEF).

Methods And Results: Two hundred and fifteen [59 ± 13 years old, 152 (71%) men] consecutive patients with left ventricular (LV) systolic dysfunction and frequent PVCs referred for ablation were included and followed-up for 12 months.