Evaluation of a Rechargeable Pacemaker System

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Abstract
A rechargeable‐demand nickel‐cadmium pulse generator for permanent transvenous cardiac pacing was evaluated in 66 patients. During a cumulative follow‐up period of 2,333 patient months (194.4 patient years), failure of the pacing circuit occurred in 3 patients at 21, 25, and 27 months, respectively. Nine patients had difficulty accepting the recharging concept and, in 3 of these patients, it became necessary to replace the rechargeable generator with a conventional energy source. The overall failure rate of approximately 3% per year (including the 3 patients in whom it was necessary to remove the generator because of failure to recharge properly), coupled with the inconvenience of recharging, limits the usefulness of the rechargeable system compared to the newer lithium‐powered generator.

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