Postmeal glucose compared to oral glucose tolerance in non-diabetic patients with acute myocardial infarction

Background: Abnormal glucose tolerance (AGT) in non-diabetic patients with acute myocardial infarction is associated with decreased survival compared to those with normal glucose tolerance (NGT). The aim of this study was to test if two-hour postprandial glucose (PPG2h) after a mixed meal correlates with the two-hour oral glucose tolerance test (OGTT2h). Methods: We prospectively enrolled 189 non-diabetic patients with acute myocardial infarction. Results: According to the oral glucose tolerance test (OGTT), 37.0% had NGT, 4.8% had impaired fasting glucose, 37.6% had impaired glucose tolerance (IGT) and 20.6% had diabetes. PPG2h after each meal correlated with OGTT2h (R2= 0.13-0.26, P<0.001). In diabetic patients, PPG2h levels after each meal were higher (p<0.01 for all) than in the IGT and NGT group. In the NGT and IGT group, PPG2h was higher after lunch and dinner than after breakfast (p