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In patients with heart failure (HF), the association between sudden death and arrhythmic pattern at 24-h Holter monitoring [number of ventricular premature contractions per hour (VPCs/h) and presence of non-sustained ventricular tachycardia (NSVT)] has previously been investigated with conflicting results. Since both VPCs/h and NSVT disregard the time course of arrhythmic events, we developed a new index based on the short-term peak rate of ectopies and investigated its prognostic power in HF patients.

Prediction of sudden death in heart failure patients: a novel perspective from the assessment of the peak ectopy rate