Frequency of impaired oral glucose tolerance test in acute myocardial infarction patients without previous diabetes mellitus

Objective: to determine the frequency of impaired glucose tolerance in patients with acute myocardial infarction without previous history of diabetes mellitus. study design: descriptive case series study. place & duration of study: acute myocardial infarction patients admitted in south medical ward of mayo hospital lahore from 17-09-2008 to 16- 03-2009. subjects & methods: 170 patients of acute myocardial infarction without previous history of diabetes mellitus were included. fasting blood glucose levels were checked first,then 75 gm of glucose was given orally. blood glucose levels were then checked at 30 minutes,1 hour,2 hours,and 3 hours. results: the mean age of patients was 52.2±6.5 years. the mean fasting blood glucose level was 104.3±11.4mg/dl. the mean blood postprandial glucose levels at 30 minutes,1 hour,2 hours & 3 hours after 75gm of glucose were 145.8±15.9mg/dl,140.1±15.3mg/dl,136±15.8mg/dl and 130.0±16.2mg/dl respectively. there were 103 (60.6%) patients of normal blood glucose tolerance and 67 (39.4%) patients of impaired blood glucose tolerance. conclusions; glucose tolerance test is an important predictor for determination of frequency of impaired glucose tolerance & new diabetes mellitus in patients presenting with acute myocardial infarction who are not previously known diabetic.