Left Ventricular Versus Simultaneous Biventricular Pacing in Patients With Heart Failure and a QRS Complex >120 Milliseconds
نویسندگان
چکیده
Bernard Thibault, MD; Anique Ducharme, MD, MSc; François Harel, MD, PhD; Michel White, MD; Eileen O’Meara, MD; Marie-Claude Guertin, PhD; Joel Lavoie, PhD; Nancy Frasure-Smith, PhD; Marc Dubuc, MD; Peter Guerra, MD; Laurent Macle, MD; Léna Rivard, MD; Denis Roy, MD; Mario Talajic, MD; Paul Khairy, MD, PhD; for the Evaluation of Resynchronization Therapy for Heart Failure (GREATER-EARTH) Investigators
منابع مشابه
Letter by van Gelder and Bracke regarding article, "Left ventricular versus simultaneous biventricular pacing in patients with heart failure and a QRS complex >120 milliseconds".
BACKGROUND Left ventricular (LV) pacing alone may theoretically avoid deleterious effects of right ventricular pacing. METHODS AND RESULTS In a multicenter, double-blind, crossover trial, we compared the effects of LV and biventricular (BiV) pacing on exercise tolerance and LV remodeling in patients with an LV ejection fraction ≤35%, QRS ≥120 milliseconds, and symptoms of heart failure. A tot...
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BACKGROUND The first generation of cardiac resynchronization therapy (CRT) devices approved for the treatment of heart failure used simultaneous biventricular (BiV) pacing to achieve ventricular resynchronization. Left ventricular pacing alone and sequential BiV pacing also show promise as alternative ways to deliver CRT, but have not been studied together in a large randomized trial. METHODS...
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We tested whether biventricular resynchronization explains contractile function changes with univentricular and biventricular pacing in heart failure patients with varying magnitudes of baseline biventricular asynchrony. Thirty patients (New York Hospital Association class > or = III, QRS duration > or =120 ms) were tested. Contractile function was measured by left ventricular maximum first der...
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BACKGROUND Cardiac resynchronization therapy has emerged as an important therapy for advanced systolic heart failure. Among available cardiac resynchronization therapy pacing modes that restore ventricular synchrony, it is uncertain whether simultaneous biventricular (BiV), sequential BiV, or left ventricular (LV) pacing is superior. The Device Evaluation of CONTAK RENEWAL 2 and EASYTRAK 2: Ass...
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