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目的 :探讨脐血流阻力指标 (S/D、PI、RI)在正常与高危妊娠中的变化及其与围产儿预后的关系。方法 :1998年 3月至 1999年 3月住院的正常与高危产妇共计 110例 ,均于产前 1周内行多普勒超声检查 ,并统计相关临床资料。结果 :高危妊娠时脐血流阻力指数较正常时明显升高 ,各组中S/D值超过警戒值 (2 .2 0 )及危险值 (2 .6 6 )者围产儿预后不良发生率较S/D值正常者显著升高。结论 :彩色多普勒超声测定脐血流阻力指数是一种简便、无创、有效的围产期监测手段 ,以S/D值 2 .2 0为警戒线 ;S/D值 2 .6 6为危险线可能更有助于胎儿缺氧的早期诊断 ,确保围产儿安全
Objective: To investigate the changes of cord blood flow resistance index (S / D, PI, RI) in normal and high risk pregnancies and its relationship with prognosis of perinatally. Methods: A total of 110 normal and high-risk women hospitalized from March 1998 to March 1999 were examined by Doppler ultrasound within one week before delivery and the related clinical data were collected. Results: The index of umbilical blood flow resistance in high-risk pregnancy was significantly higher than that of the normal one. The S / D value in each group exceeded the alert value (2.02) and the risk value (2.66) in the perinatal poor prognosis S / D values were significantly higher. CONCLUSION: Color Doppler ultrasound is a simple, noninvasive and effective method of perinatal monitoring. The S / D value of 2.02 is the warning line. The S / D value of 2.664 is Dangerous lines may be more helpful in the early diagnosis of fetal hypoxia to ensure perinatal safety