Abstract: Objective: The patients with T2DM that passively underwent gastrectomy were chosen and the differences of their basic clinical data before and after the gastrectomy were analyzed to find the contribution of the factors in glycemia control. Thus the information of bariatric surgery in treating T2DM was offered in our country. Methods: The clinical data of 45 patients with T2DM that underwent gastrectomy in Peking Union Medical College Hospital from January 2001 to December 2010 have been retrospectively analyzed in this study. The patients were divided into the improved group (29 cases) and the ineffective group (16 cases) with the standard that whether the glucose level or amount of antidiabetic drug reduced for 20% after surgery or not. The data of age, body mass index(BMI), course of T2DM,preoperative blood pressure were analyzed to determine the influencing factors of the differences between the improved group and the ineffective group. Results: There was a significant difference in the course of T2DM between the improved group(5.51±1.70)and ineffective group(10.70±2.31).In the improved group and ineffective group, the average age was 61.43±11.33 and 67.09±9.10, BMI was 23.19±2.28 and 25.24±3.40 respectively. The differences were both not statistically significant. In addition, the blood pressure didn’t have significant change after the surgery in patients with both T2DM and hypertension. Conclusion: The surgical treatment of T2DM is suitable for patients with shorter courses of T2DM(less than 5 years). BMI is meaningless in choosing the patients. The sample size of this study was small and the gastrectomy was passive in the patients thus prospective studies with large samples are needed to verify this conclusion.

Key words: gastrectomy, T2DM