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Acute heart failure (AHF) is a heterogeneous condition, and its characteristics and management patterns differ by region. Furthermore, limited evidence is available on AHF outside of Western countries. A project by the National Consortium of Acute Heart Failure Registries was designed to evaluate the trends over time in patient backgrounds, in‐hospital management patterns, and long‐term outcomes of patients with AHF over 9 years in Japan.

Between 2007 and 2015, registry data for patients with AHF were collected from 3 large‐scale quality AHF registries (ATTEND/WET‐HF/REALITY‐AHF). Predefined end points were trends over time in age, sex, and clinical outcomes, including short‐ and long‐term mortality and readmission for heart failure. The final data set consisted of 9075 patients with AHF. No significant differences in patient backgrounds and laboratory findings (eg …