Study: Dual-chamber pacemakers not an improvement for people over 70

07/14/2005 | AlertNet

The benefits of two-chamber pacemakers in older patients have been overestimated, according to a new study showing pacemakers that stimulate only one chamber of the heart are as effective in people over 70 as the more expensive devices that stimulate two chambers. The pacemakers often are used for patients with atrioventricular blocks, which result from electrical impulses failing to reach the ventricles or being delayed.

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