Why the study?
Does electrical storm increase the risk of subsequent death in patients with an implantable cardioverter defibrillator?
Population
457 patients who received an implantable cardioverter defibrillator in the Antiarrhythmics Versus…
Comparison
Electrical storm vs VT/VF unrelated to electrical storm and…
Design
Cohort
Follow-up
31 +/- 13 months
Key result
Electrical storm in ICD recipients was an independent risk factor for subsequent death (RR 2.4; 95% CI 1.3 to 4.2; P=0.003), with the greatest risk occurring in the first 3 months.
Authors
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Electrical storm signals high short-term mortality risk in ICD recipients; hypothesis-generating for targeted interventions.
Cohort (n=457)
Does electrical storm increase the risk of subsequent death in patients with an implantable cardioverter defibrillator?
Effect estimate: RR 2.4 (95% CI 1.3 to 4.2)
p-value: p=0.003
Electrical storm is an important, independent marker for subsequent death among ICD recipients, particularly in the first 3 months after its occurrence.
Exner et al. (2001) conducted a cohort in ICD recipients (n=457). Electrical storm vs. VT/VF unrelated to electrical storm or no VT/VF was evaluated on Subsequent death (RR 2.4, 95% CI 1.3 to 4.2, p=0.003). Electrical storm in ICD recipients was an independent risk factor for subsequent death (RR 2.4; 95% CI 1.3 to 4.2; P=0.003), with the greatest risk occurring in the first 3 months.