RESUMEN
AIM: To investigate the prevalence of glucose abnormalities in patients with acute coronary syndrome and to assess the reliability of certain clinical or analytical variables to predict a pathologic result of oral glucose tolerance test (OGTT) at 3 months from discharge. SUBJECTS AND METHODS: Prospective study of 102 patients admitted to the coronary care units. Patients were classified according to the American Diabetes Association criteria. Three months after discharge, an OGTT was performed to non-diabetic patients. RESULTS: Forty-six (45.1%) patients were identified as diabetic (5 previously undiagnosed) and 56 (54.9%) as non-diabetic. OGTT identified 22% of diabetes, 33% of impaired glucose tolerance, and 45% of normal glucose tolerance. Fasting glucose (r=0.55, p<0.001), glycated hemoglobin (HbA1c) (r=0.46, p<0.001), low HDL cholesterol (HDLc) levels (r=-0.34, p<0.02), waist-hip ratio (r=0.45, p<0.01), high systolic blood pressure (r=0.5, p<0.01), and presence of acute myocardial infarction (r=0.46, p<0.001) at admission resulted significant to predict a pathologic result of OGTT. CONCLUSIONS: Glucose abnormalities are frequent in acute coronary syndrome patients. Certain clinical and analytical markers at admission such as fasting glucose, HbA1c, HDL-c<40 mg/dl, waist-hip ratio, and systolic blood pressure, are useful to recognize patients with a higher predisposition to present a pathologic result in OGTT at 3 months from discharge.