RESUMO
Objective To evaluate the effect of Roux-en-Y gastric bypass on patients with different preoperative glycosylated hemoglobin (HbAlc) level.Methods From Jan.2008 to Dec.2009,54 patients with gastric lesions and type 2 diabetes mellitus were preoperatively divided into 3 groups:group A (HbAlc:6.5％ -7.9％ ),group B ( HbAlc:8.0％ - 9.9％ ),and group C ( HbAlc ＞ 10％ ).They all underwent Roux-en-Y gastric bypass.The fasting plasma glucose(FPG) and HbAlc concentration were measured before surgery and 12,24,48 weeks after surgery.The antidiabetic medication was analyzed before surgery and 48 weeks after surgery.Results FPG and HbAlc concentration decreased significantly after surgery ( P ＜ 0.01 ).FPG and HbAlc concentration differed greatly between the different groups ( P ＜ 0.01 ).With the increase of preoperative HbAlc,FPG and HbAlc concentrations were poorly controlled after surgery.Conclusion Roux-en-Y gastric bypass surgery can effectively improve glucose metabolism for patients with preoperative HbAlc ＜ 10％.