Comparative Analysis of Short-Term Outcomes of Patients With Heart Failure With a Mid-Range Ejection Fraction After Acute Decompensation

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Abstract

To determine short-term outcomes after an episode of acute heart failure in patients with mid-range ejection fraction (40%–49%; HFmrEF) compared with patients with reduced (<40%) and preserved (>49%) ejection fractions (HFrEF and HFpEF, respectively) and according to their final destination after emergency department (ED) care. This is an exploratory, secondary analysis of the Epidemiology of Acute Heart Failure in the Emergency departments Registry, which includes consecutive acute heart failure patients diagnosed in 41 Spanish EDs. Patients with echocardiography data were included and divided into HFrEF, HFmrEF, and HFpEF. The primary outcome was 30-day all-cause mortality, and secondary outcomes were in-hospital all-cause mortality, hospital length of stay >10 days, and 30-day postdischarge ED revisit due to AHF and combined end point (ED revisit and/or death). We included 6,856 patients (age 79 [10]; 52.1% women): 21.6% had HFrEF, 14.3% HFmrEF, and 64.1% HFpEF. The main destinations for the 982 HFmrEF patients after ED management were internal medicine (293, 29.8%), cardiology (194, 19.9%) and not hospitalized (241, 24.5%), whereas the remaining 254 patients were admitted to other departments, including geriatric wards, short-stay units and intensive care units. Outcomes for HFmrEF did not differ compared with either HFrEF or HFpEF. Compared with HFmrEF admitted to cardiology, internal medicine admission or direct ED discharge increased the 30-day postdischarge ED revisit (hazard ratio [HR] 1.713, 95% confidence interval [CI] 1.042 to 2.816; and HR 1.683, 95% CI 1.046 to 2.708, respectively) and the 30-day postdischarge combined end point (HR 1.732, 95% CI 1.070 to 2.803; and HR 1.727, 95% CI 1.083 to 2.756, respectively). In conclusion, patients in the newly created HFmrEF category suffering from an acute decompensation have similar short-term outcomes as those in the classical HFrEF and HFpEF categories; nonetheless, HFmrEF patients handled in cardiology wards during decompensation obtain better outcomes, and reasons for these differences have to be unmasked and corrected.

Original languageAmerican English
Pages (from-to)84-92
Number of pages9
JournalAmerican Journal of Cardiology
Volume123
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

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