正常中孕胎儿大脑中动脉血流参数的正常值范围  

Reference Ranges of Blood Flow Parameters of the Normal Second trimester Fetal Middle Cerebral Artery

作　　者：罗支农[1] 韦怀新[2] 郭会平 刘刚纯 陈春艾[1] 王新玉[1] 曹晓桦[1] 钟梅[2] 

机构地区：[1]解放军第157医院特诊科,广州市510510 [2]广州南方医院 [3]解放军第157医院妇产科,广州市510510

出　　处：《中国超声医学杂志》2000年第12期933-934,共2页Chinese Journal of Ultrasound in Medicine

基　　金：广东省卫生厅青年科学基金资助

摘　　要：目的 :确定正常中孕胎儿大脑中动脉血流参数的正常值范围。方法 :应用彩色多普勒能量图及脉冲多普勒技术对 2 15例 16～ 31孕周正常胎儿大脑中动脉血流参数进行检测。结果 :正常胎儿大脑中动脉的最大流速及平均流速随孕周的增加而加快。阻力指数在孕 16～ 2 4周时随孕周的增加而升高 ,孕 2 4～ 31周时保持高水平。最大流速、平均流速及阻力指数与推算出的胎儿体重呈正相关。结论Objective:To assess reference ranges of blood flow parameters of the normal second trimester fetal middle cerebral artery.Methods:Blood flow parameters of middle cerebral artery were assessed in 215 normal fetuses at 16 to 31 weeks gestation by color Doppler power imaging and pulsed Doppler.Results:During 16 to 31 weeks gestation,maximum and mean blood flow velocities of fetal middle cerebral artery were increased with gestation age.Resistance indexes of fetal middle cerebral artery were increased with gestation age during 16 to 24 weeks gestation and then kept high level during 24 to 31 weeks gestation.Maximum blood flow,mean blood flow velocities,resistance index are all positively correlative to fetal weight.Conclusions:This study offers a theoretic basis for the early prediction of fetal hyperdynamic circulation with Doppler ultrasound.

关 键 词：胎儿 大脑中动脉 血流参数 正常值 多普勒超声 

分 类 号：R445.1[医药卫生—影像医学与核医学]