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Objective: To evaluate survival in patients with cardiac resynchronization with or without cardioverterdefibrillator versus patients with implantable cardioverter- defibrillator alone.  Materials and methods: Retrospective cohort, the primary end point was death from cardiac causes, the exposure was electrophysiological therapies, and the information sources were medical files and other records.  Results: 70 elderly patients with functional devices; 82 % of them received optimized medical therapy. No significant association was found between survival of patients with cardiac resynchronization therapy with or without defibrillator and cardioverter-defibrillator therapy alone (log rank test, p = 0.54), but the former had a longer survival time (ANOVA p = 0.0012). The hazard ratio was 0.017 for day 371 and 0.15 for day 2169. Fourteen deaths occurred during the observation period, three of them from non-cardiac causes.  Conclusion: Cardiac resynchronization therapy was associated with significantly longer survival time.

iatreia

Terapia de resincronización cardíaca con o sin cardiodesfibrilador versus terapia con desfibrilador automático, Pereira (Colombia): un estudio de cohorte