Hemoglobin concentration is an independent determinant of heart failure in acute coronary syndromes: cohort analysis of 2310 patients.

Background: Anemia is an important determinant of heart failure and death after ST elevation myocardial infarction (STEMI). The frequency of anemia and its impact on these outcomes across the range of acute coronary syndromes (ACS), however, have not been defined.

Methods: This is a cohort study of 2310 patients with ACS stratified by quartiles of admission hemoglobin concentration [Hb]): Q1, <12.