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Updated: Jan 23, 2026

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
Published on: February 13, 2021
Clinical Characteristics and Long-Term Outcomes of Patients with Acute Decompensated Heart Failure with Mid-Range
Miyuki Ito1, Hiroshi Wada1, Kenichi Sakakura1
1Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University.
Abstract:
According to recent guidelines, a new category of patients with heart failure (HF) with mid-range left ventricular ejection fraction (LVEF) (HFmrEF) (LVEF = 40%-49%) has been defined. The purpose of this study was to investigate the clinical characteristics and long-term outcomes of patients with HFmrEF. This was a single-center, retrospective, observational study in which we examined the clinical characteristics and outcomes of 494 consecutive patients with acute decompensated heart failure who were admitted to our institution between January 2014 and December 2016. Of this population, 282 (57.1%), 75 (15.2%), and 137 (48.6%) patients had heart failure with reduced ejection fraction (HFrEF), HFmrEF, and heart failure with preserved ejection fraction (HFpEF), respectively. Ischemic heart disease was the primary etiology in HFmrEF and HFrEF. At the time of discharge, β-blockers and renin-angiotensin system inhibitors were more frequently prescribed in HFmrEF than in HFpEF. The composite outcome of cardiovascular mortality and HF readmission was significantly lower in HFmrEF than in HFrEF. Further studies are needed to determine the effectiveness of the management of coronary artery disease and cardioprotective medications for HFmrEF.
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