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Previous Volume 338:1146-1148 April 16, 1998 Number 16 Next

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Cardiac pacemakers have become increasingly sophisticated during their half-century of clinical use. Each new component has been designed to simulate normal physiology more precisely. Is such complexity necessary? In this issue of the Journal, Lamas and colleagues¹ report the results of the Pacemaker Selection in the Elderly (PASE) trial, a comparison of sophisticated dual-chamber pacing with less complex ventricular pacing in patients with bradycardia. The investigators conclude that dual-chamber pacing improved the quality of life, but the benefit was seen only in the subgroup with sinus-node dysfunction.

On the surface, it seems obvious that dual-chamber pacing would be superior to . . . [Full Text of this Article]

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