Abstract: Objective To study the outcome of gestational diabetes mellitus(GDM) and impaired glucose tolerance(GIGT) diagnosed with different criteria.Methods 1856 subjects were collected from the births file of the hospital affiliated of Suihua Medical School from 1999 to 2005,which were divided into six groups(The first goup is control,the second Le Jie GIGT group,the third Cao Zeyi GIGT group,the forth GDM Le Jie group,the fifth Cao Zeyi GDM group,the sixth OGTT group) according to different dignosing criteria.Pregancy outcome of this six groups were analyzed and compared.Results Among 1856 subjects,GDM by Le Jie criteria was 82(4.4%),GIGT by Le Jie criteria 92(5.0%),GDM by Cao Zeyi criteria 56(3.0%),GIGT by Cao Zeyi criteria 60(3.2%) and GIGT by OGTT was over 6.7 mmol/L 136(7.3%).Significant difference was shown(P<0.05) when groups 2～6 compared with control,and was not shown(P>0.05) when compared between groups 2～6.Conclusion Different dignosing criteria would not induce the different pregnancy outcome,but GDM and GIGT remain a high-risk situation that increases maternal and infant morbidity,timely and effective administration combining with accurate diagnose would improve the outcome of pregnancy.

Key words: gestational diabetes mellitus, impaired glucose tolerance, pregnancy outcome