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目的：研究胎儿肾、脑动脉血流参数和羊水指数与围产儿预后的关系，探讨预测胎儿不良结局的方法。方法：应用彩超Ｄｏｐｐｌｅｒ，根据羊水指数（ＡＦＩ）值，将临产妇分为羊水量过少组、减少组和正常组。测定各组胎儿脑动脉（ＭＣＡ），肾动脉（ＲＡ）血流参数（Ｓ／Ｄ、ＰＩ、ＲＩ）及胎儿小时尿量（ＨＦＵＰＲ），Ｍ／ＲＰＩ。结果：羊水量减少组的胎儿ＲＡ的血流参数明显高于正常组（Ｐ＜０．０１）。ＡＦＩ与ＭＣＡＰＩ，ＨＦＵＰＲ，Ｍ／ＲＰＩ间呈正相关关系（ｒ＝０．２０６，０．５６９，０．３７９；Ｐ＜０．０５～０．０１），而与ＲＡＰＩ及围产儿预后呈负相关关系（ｒ＝－０．３９７，－０．７０２；Ｐ＜０．０１）。结论：ＡＦＩ测定是预测胎儿不良预后的简易方法
OBJECTIVE: To study the relationship between fetal renal artery and cerebral artery blood flow parameters and amniotic fluid index and the prognosis of perinatal children, and to explore methods to predict the adverse outcome of the fetus. Methods: Color doppler Doppler, according to amniotic fluid index (AFI) value, the mothers were divided into oligohydramnios group, reducing the group and the normal group. The blood flow parameters (S / D, PI, RI) and hourly urinary output (HFUPR) and M / RPI of fetal brain artery (MCA) and renal artery (RA) were measured in each group. Results: The blood flow parameters of fetus with amniotic fluid decreased significantly (P <0.01). There was a positive correlation between AFI and MCAPI, HFUPR and M / RPI (r = 0.206,0.569,0.379; P <0.05-0.01), but negatively correlated with RAPI and perinatal outcome (R = -0.397, -0.702; P <0.01). Conclusion: AFI is a simple method to predict poor fetal prognosis