Study of 8 665 cases of the 50 g oral glucose challenge test to screen the gestational diabetes mellitus
- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY
- Issue:
- 3
- DOI:
- 10.3760/j.issn:0529-567X.2003.03.003
- Key Word:
- 糖尿病,妊娠;葡糖耐量试验;回顾性研究
Abstract： 目的探讨50 g葡萄糖负荷试验 (GCT) 筛查妊娠期糖尿病( GDM) 的阈值、适宜孕周,孕妇年龄和体重因素对GDM发生的影响.方法采用回顾性研究的方法,对1995年1月至2001年3月在北京大学第一医院妇产科行GCT的8 665例孕妇的临床资料进行分析.结果 (1)8 665例孕妇 GCT 1 h平均血糖水平为(6.8±1.7) mmol/L,以7.8 mmol/L为切点,GCT异常率为25.2%,GDM漏诊率为5.3%(17/321);以7.2 mmol/L为切点,GCT异常率为36.5%,GDM漏诊率为2.8 %(9/321);以8.3 mmol/L为切点,GDM漏诊率为15.9%(51/321). (2)GCT 1 h血糖≥11.2 mmol/L者中,GDM发生率为55.8%(92/165),其中62.0%(57/92)根据空腹血糖水平可以做出诊断.(3)孕24周以后,不同孕周间GCT异常率无差异.(4)GCT异常率和GDM发生率不同年龄组比较,差异有极显著性(P<0.01),25岁以下无GDM高危因素的孕妇GDM发生率为0.3%,显著低于年龄≥25岁的孕妇.(5)孕26～28周时孕妇的平均体重指数(BMI)为(24.9±2.9) kg/m2(±s),当BMI≥27.8时,GCT异常率和GDM发生率均显著增高.结论 (1)GCT筛查GDM以7.8 mmol/L为切点是合理的; GCT 1 h血糖≥11.2 mmol/L 时,应先行空腹血糖检查确诊是否为GDM.(2)孕24周后尽早行GCT是恰当的,但对于有明显高危因素者应在孕24周前行GCT.(3)孕妇年龄和体重与GDM的发生密切相关,25岁以下无高危因素者可以不行GDM筛查.
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