Single-chamber versus dual-chamber pacing: which is most efficacious in elderly patients with atrioventricular block?
David O Martin
Correspondence The Cleveland Clinic Foundation/F15, 9500 Euclid Avenue, Cleveland OH 44195, USA
Email martind3@ccf.org
This article has no abstract so we have provided the first paragraph of the full text.
Dual-chamber pacing was developed to restore atrioventricular synchrony in patients with atrioventricular block. Lack of atrioventricular synchrony can result in atrial contraction when the mitral and tricuspid valves are closed, causing increased atrial pressures, decreased systolic function and pacemaker syndrome in some cases. The benefits of dual-chamber pacing versus single-chamber right ventricular (RV) pacing seem obvious, as numerous physiologic studies have shown improved hemodynamics with dual-chamber pacing.
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