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“Atricor” P-synchronous pacemakers have been installed in 11 patients by the use of pervenous electrodes. At the follow-up, 8 patients still had P-synchronous pacemakers working, whereas in 2 cases “Ectocar” (“demand”) had been installed on account of non-functioning atrial electrodes. One patient received a temporary “demand” pacemaker because of cardiac surgery. In 1 patient, a pervenous atrial electrode has been used for atrial pacing as treatment for sinus bradycardia. This pacemaker has now functioned for 1 year. In 5 patients, surgical replacement of displaced atrial electrodes has been necessary. Proper fixation of the atrial electrode in the subclavian fossa is vital for successful P-synchronous pacing of longer duration.
Cappelen et al. (Tue,) studied this question.
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