Abstract
Study of extracorporeal circulation of 10 cardiac patients with diabetes or borderline type was examined to measure blood glucose, urinary glucose, and insulin levels regularly during and after extracorporeal circulation. During the extracorporeal circulation, blood and urinary glucose levels of these 10 patients were significantly higher than the glucose levels of control group (P<0.001) in spite of almost same depressed levels of insulin between these patients and control group. After the extracorporeal circulation, blood and urinary glucose levels of these borderline and diabetic patients had a tendency of decreasing toward normal level as well as these levels of control group except that high glucose levels in three patients with diabetes were continued.