188例脐血流S/D异常的临床分析

The clinical significance of Doppler umbilical artery S/D ratio in pregnancy— a report of 188 cases.

目的探讨应用彩色多普勒脐血流分析仪在监护胎儿宫内安危的临床价值.方法检测1789例妊娠28^＋～42^＋w孕妇的胎儿脐动脉血流频谱,测定收缩期峰值与舒张期低值之比（S/D）.分析异常组（S/D≥3）188例及正常组（S/D＜3＝1601例其胎儿的妊娠结局.结果异常组的脐带绕颈,中重度妊高征,胎儿窘迫及IUGR的发生率均明显高于正常组（P＜0.05～0.01＝.结论高危胎儿其脐带血流缓慢,影响供血,表现S/D异常,提示S/D异常与胎儿宫内缺氧呈明显正常关系.

Objective： To evaluate the effect of Doppler umbilical artery systolic/diastolic （S/D） ratio on predicting fetal hypoxia in pregnancy. Methods： 1789 cases of women with pregnancy in 28 -42 weeks were examined with color Doppler umbilical S/D ratio. 188 cases in abnormal S/D ratio of ≥3 as study group and 1601 cases served as control （ S/D 〈3）. The outcome of all fetus were ana- lyzed. Results： The incidence of umbilical cord around fetal neck, middle and severe hypertension, fetal hypoxia and intrauterine growth retardation （IUGR） were high significantly in the study group than that of normal group （ P 〈0. 01 ）. Conclusion： In high risk pregnancy, the fetal umbilical artery blood flow decreases. There is an obvious correlation between fetal hypoxia and abnormal umbilical artery S/D ratio.