Atrial Therapies Reduce Atrial Arrhythmia Burden in Defibrillator Patients

269 patients with a standard indication for the implantation of an ICD and 2 episodes of atrial tachyarrhythmias in the preceding year. Analysis was performed on 52 patients who had episodes of atrial tachyarrhythmia and had ≥30 days of follow-up with atrial therapies on and off.

Dual-chamber ICD (Medtronic 7250 Jewel AF) with atrial therapies 'on' (pacing and shock therapies for prevention and/or termination of atrial tachyarrhythmias) for a 3-month period.

Dual-chamber ICD with atrial therapies 'off' for a 3-month period (crossover design).

Burden of spontaneous atrial tachyarrhythmias (hours/month).surrogate