The incremental benefit of rate-adaptive pacing on exercise performance during cardiac resynchronization therapy

OBJECTIVES: The purpose of this research was to investigate the effect of using rate-adaptive pacing and atrioventricular interval (AVI) adaptation on exercise performance during cardiac resynchronization therapy (CRT). BACKGROUND: The potential incremental benefits of using rate-adaptive pacing and AVI adaptation with CRT during exercise have not been studied. METHODS: We studied 20 patients with heart failure, chronotropic incompetence (70% AP-HR, patients with 70% AP-HR. The percentage HR changes during exercise positively correlated with exercise time (r = 0.67, p 70% AP-HR, appropriate use of rate-adaptive pacing with CRT provides incremental benefit on exercise capacity during exercise. © 2005 by the American College of Cardiology Foundation.link_to_subscribed_fulltex