Incidence of defibrillator shocks after elective generator exchange following uneventful first battery life.
Bottom Line: Elective generator exchange (GE) has been associated with increased risk of infection and ICD lead failure.In this large cohort of ICD patients implanted across the United States, two thirds did not receive ICD shock therapy prior to GE.These data should support informed decision making for patients and physicians at the time of ICD generator end of service.
Affiliation: Cardiology Division, Emory University School of Medicine, Atlanta, GA (F.M.M., M.S.L.).Show MeSH
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Mentions: During an average follow‐up of 1.9±1.2 years after GE, the percentage of patients with shocks and the risk of ICD shocks were lower in group A (9.9% versus 27.7%, HR 0.36, 95% CI 0.34 to 0.38, P<0.001). The cumulative rate of ICD shocks at 5 years after GE was 25.7% in group A and 51.1% in group B (Figure 1). As shown in Figure 1, the frequency of ICD shocks after GE in both groups was relatively constant, beginning within the first year after GE and without evidence of reaching a plateau by 5 years.
Affiliation: Cardiology Division, Emory University School of Medicine, Atlanta, GA (F.M.M., M.S.L.).