Where patients with mild to moderate heart failure die: results from the Sudden Cardiac Death in Heart Failure Trial (SCD-HeFT)

Abstract

Background: Common locations of death in patients with congestive heart failure (CHF) are unknown. In the SCD-HeFT, mortality of patients with CHF was assessed after randomization to an implantable cardioverter/defibrillator (ICD), amiodarone, or placebo. The aim of this study was to evaluate the location of deaths in SCD-HeFT.

Methods: Among SCD-HeFT patients whose location of death was identified, we used logistic regression to assess the relationship of randomized treatment arm and other baseline predictors with the location of death. Cause of death was adjudicated by a therapy-blinded events committee.

Results: In SCD-HeFT, 666 (26%) of 2521 patients died. Of the 604 (91%) for whom location of death was known, 58% died in hospital and 29% died at home. Patients randomized to receive an ICD were less likely to die at home than patients randomized to placebo (P = .002). Fewer patients randomized to ICDs died; even fewer randomized to ICDs died at home. Age, sex, etiology of heart failure, left ventricular ejection fraction, and New York Heart Association functional class were not associated with location of death. Sudden cardiac death represented 52% of all out-of-hospital deaths but in hospital deaths exceeded out-of-hospital deaths.

Conclusion: Deaths in SCD-HeFT, a well-treated CHF population, were most often in hospital. ICDs were associated with lower total and sudden death rates at home and in hospital. Development of methods to identify which patients will not respond to optimal treatment, including an ICD, remain a challenge.