高危妊娠胎儿肾动脉、大脑中动脉搏动指数比值预测胎儿缺氧  

Prediction of fetal hypoxia by pulsatility index ratios of fetal renal artery and middle cerebral artery in high risk pregnancy

作　　者：武永丽[1] 王丽杰[1] 姜桂艳[1] 杨国英[1] 宋淼[1] 宋新成[1] 

机构地区：[1]内蒙古医学院附属人民医院功能科,呼和浩特市010010

出　　处：《临床超声医学杂志》2008年第8期520-522,共3页Journal of Clinical Ultrasound in Medicine

摘　　要：目的应用彩色多普勒超声技术检测胎儿大脑中动脉(MCA)和肾动脉(RA)血流动力学指标,探讨高危妊娠胎儿RA和MCA的搏动指数比值预测胎儿宫内缺氧的临床应用价值。方法选取晚期正常妊娠孕妇95例,晚期高危妊娠孕50例,检测两组胎儿MCA和RA的血管收缩期峰值速度(S)与舒张末期流速(D)比值、阻力指数(RI)及搏动指数(PI),同时计算两组RA与MCA的PI比值,并将以上检测值与围产儿缺氧指标进行比较。结果高危组胎儿MCA脉各阻抗指标均低于正常妊娠组(P<0.01);RA各阻抗指标均高于正常妊娠组(其中PI、RI值P<0.01,S/D值P<0.05);RA和MCA搏动指数比值高于正常组(P<0.01)。以PI_(RA/MCA)>1.50提示胎儿宫内缺氧的敏感性和特异性分别为86.0%和91.5%。结论胎儿RA和MCA的搏动指数比值预测胎儿缺氧具有较高的敏感性和特异性。Objective To study the clinical value of pulsatility index ratios（PI） of fetal renal artery（RA） and middle cerebral artery（MCA） in high risk pregnancy by color Doppler ultrasonography . Methods Color Doppler ultrasound was used to examine fatal MCA and RA blood flow index in two groups： normal pregnancy （95 cases） and high risk groups（ 50 cases）. The resistant index（RI）, pulsatility index（PI） and peak systolic to end diastolic ratio（S/D） were evaluated and the pulsatility index（PI） of RA to MCA were calculated and analyzed. All these results were compared with some clinical index of hypoxia. Results The RI, PI and S/D of fetal RA and UA in the high risk group were significantly higher than those in normal group（P 〈 0.01）and the RI,PI and S/D of MCA in the high risk group were lower than those of the normal group （ P 〈 0.05）. The PIRA/MCA of the risk group were higher than those of normal group（ P 〈 0.01） .The sensitivity and specificity in predicting fetal of hypoxia was 86% and 91.5%, respectively. Conclusion The result of PIRA/MCA has higher sensitivity and specificity in predicting fetal of hypoxia.

关 键 词：妊娠 高危 胎儿缺氧 大脑中动脉 肾动脉 

分 类 号：R711.6[医药卫生—妇产科学] R714.43[医药卫生—临床医学]