胎儿脐动脉及大脑中动脉阻力参数正常值  

Normograms of resistance of fetal umbilical artery and middle cerebral artery

作　　者：徐加英[1] 韩绯 张亦青 楼东红 王晓莹[1] 杨雪鹰[1] 邱俐 

机构地区：[1]浙江萧山医院超声科,杭州311201

出　　处：《中华围产医学杂志》2007年第3期166-169,共4页Chinese Journal of Perinatal Medicine

基　　金：志谢：本课题在选题及论文撰写过程中得到新加坡竹脚妇幼医院严英榴教授的悉心指导,在此谨向严老师致以诚挚的谢意!

摘　　要：目的了解本地区低危人群胎儿脐动脉（umbilical artery，UA）及大脑中动脉（middle cerebral artery，MCA）搏动指数（pulsatility index，PI）、阻力指数（resistance index，RI）、收缩期峰值流速与舒张末期流速比值（S／D）的正常参考值范围。方法随机选取2218例孕20～40周的无合并症单胎孕妇，检测脐动脉（近胎儿侧）及大脑中动脉（中段）血流，记录PI、RI、S／D进行分析。结果脐动脉的血流阻力随着胎龄的增加而降低，大脑中动脉的血流阻力在孕20-26周随孕周的增加而增高，孕26～28周时达高峰，28周以后随着孕周的增加而降低。结论了解胎儿脐动脉及大脑中动脉血流阻力在不同孕周的变化规律，对判断及随访胎儿宫内缺氧状况，协助临床做出正确的产科处理具有重要意义。Objective To establish the normograms of pulsatility index （PI）, resistance index （RI） and S/D of fetal umbilical artery （UA） and middle cerebral artery （MCA） in local population. Methods Totally, 2218 uncomplicated pregnant women between 20- 40 weeks of gestations were randomly chosen. PI, RI, S/D of UA and MCA were measured and analyzed. Results The resistance of UA decreased with the progress of pregnancies. The resistance of MCA increased between 20 - 26 weeks of gestations and decreased after 28 weeks. Conclusions The patterns of resistance variation in UA and MCA in normal fetuses is valuable in the diagnosis of fetal hypoxemia and its clinic management.

关 键 词：胎儿 脐动脉 大脑中动脉 血管阻力 参考值 

分 类 号：R714[医药卫生—妇产科学]