Prognostic value of haemoglobin drop in patients with acute coronary syndromes

BACKGROUND The prognostic value of in-hospital haemoglobin drop in patients with acute coronary syndrome (ACS) undergoing invasive therapy remains insufficiently investigated. MATERIALS AND METHODS This observational study included 3838 patients with ACS with admission and in-hospital nadir haemoglobin values available. Haemoglobin drop was defined as a positive difference between admission and nadir haemoglobin values. The primary endpoint was one-year all-cause mortality. RESULTS In-hospital haemoglobin drop occurred in 3142 patients (82%). Patients were categorized into 4 groups: no haemoglobin drop (n = 696 patients)