The effect of pacemaker follow-up during the second to fifth year post implantation has been studied. 230 selected patients with single chamber pacemakers (SSI) were followed up at intervals of 2-4 years and were observed prospectively. 110 dual chamber (DDD) and 121 rate-responsive single chamber pacemakers (SSIR) were evaluated retrospectively. In the observation period 7 SSI, 11 DDD and 2 SSIR were reoperated, 8 SSI, 40 DDD and 26 SSIR were reprogrammed. The majority of the interventions were patient-initiated and not the result of routine follow-up. 13 sudden deaths were reported, none of them proven to be pacemaker-related.
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