A Study of Patients Hospitalized With Acute Heart Failure With Reduced Ejection Fraction (HFrEF)

Inclusion Criteria: * An average left ventricular ejection fraction (LVEF) \< 40% over the entire index hospitalization * Age 18 years or older on the index date * At least 6 months of activity in the databaseprior to the index date Exclusion Criteria: * Any code for myocardial infarction (ICD-9 diagnosis code: 410.xx, ICD-10 diagnosis code: I21.xx) or related terms such as "myocardial infarction", "mi", "infarct" or "heart attack" occurring during the index hospitalization Other protocol defined inclusion/exclusion criteria could apply