Heart failure is a serious disease with high mortality. The objective of this study was to identify prognostic factors in heart failure. Method: this was a case-control study carried out over a period of 24 months (from January 2017 to December 2018). Cases are patients hospitalized for heart failure with reduced ejection fraction and died during hospitalization and controls are patients hospitalized for heart failure with reduced ejection fraction and who were discharged alive.Personal history of heart failure was more represented in cases (72%) than in controls (59%) (p