Why the study?
Does the occurrence of a spontaneous shock from an AICD reduce survival in patients with an implanted device?
Population
56 consecutive patients who underwent initial implantation of an implantable cardioverter defibrillator…
Comparison
Spontaneous shock from the AICD device vs No spontaneous shock from the AICD device
Design
Cohort
Follow-up
mean 31.5 +/- 25 months
Authors
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Spontaneous ICD shocks mark markedly worse survival; leaves open whether shocks are causal or a prognostic marker.
Does the occurrence of a spontaneous shock from an AICD reduce survival in patients with an implanted device?
The occurrence of a spontaneous ICD shock is a negative prognostic indicator associated with significantly worse long-term survival.
Zilo et al. (1991) studied this question.
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