The aim of our work was to investigate the prognostic factors in chronic heart failure at the cardiology center of the National Hospital of Niamey

This is a prospective, cross-sectional study including patients with chronic heart failure or acute flare-ups with altered LVEF during the period of December 21, 2015 to May 21, 2016. We study the following parameters: anthropological, clinical, electrical, echogardiographic, biological, therapeutic and outlook. The primary outcome measure was survival after hospitalization.

Eighty-four patients were retained. The mean age was 51.39±18.38 years with extremes of 18 and 85 years. The sex ratio was 1.4 in favor of women. Hypertensive heart disease is the most frequent etiology (42.9%) followed by ischemic heart disease (13.1%). The mortality rate at the end of the study was 39.28%. Prognostic factors were found: advanced age (≥55 years) and male sex were predictive of death and rehospitalization. Acute onset, tachycardia, low systolic blood pressure, arrhythmia and crackling rattle influenced mortality. The ischemic etiology has a worse prognosis than other causes. At the ECG, left branch block and ventricular extrasystole had an effect on mortality while rehospitalizations were inflamed by left branch block and lengthening the duration of the QRS complex. Cavity dilatation and LVEF<30% influenced mortality and rehospitalization. For biological parameters, mortality was influenced by hyponatremia, hyperkalaemia and anemia; rehospitalization with hyponatremia, hypokalaemia, anemia and hyperleukocytosis.

The research of prognostic factors is paramount in the management of patients with chronic heart failure.