The Effect of Frailty on 30-day Mortality Risk in Older Patients With Acute Heart Failure Attended in the Emergency Department

Abstract

Objective: The objective was to determine the effect of frailty on risk of 30-day mortality in nonseverely disabled older patients with acute heart failure (AHF) attended in emergency departments (EDs). Methodology: The Frailty-AHF Study is a retrospective analysis of a multicenter, observational, prospective, cohort study (Older-AHF Register). This study included consecutive patients ≥ 65 years of age without severe functional dependence or dementia attended for AHF in three Spanish EDs for 4 months. Frailty was defined by frailty phenotype as the presence of three or more domains. Baseline and episode characteristics and 30-day mortality were collected in all the patients. Results: A total of 465 patients with a mean (±SD) age of 82 (±7) years were included, 283 (61.0%) being female and 225 (51.3%) with severe comorbidity (Charlson index ≥ 3). Frailty was present in 169 (36.3%). The rate of 30-day mortality was 7.3%. Frailty adjusted for potential confounding factors was an independent factor associated with 30-day mortality (adjusted hazard ratio = 2.5; 95% confidence interval = 1.0 to 6.0; p = 0.047). Conclusion: The presence of frailty is an independent risk factor of 30-day mortality in nonsevere dependent older patients attended with AHF in EDs.