摘要
目的 研究高危妊娠胎盘循环的病理生理变化及与其妊娠结局的关系。方法 将研究对象根据脐血流S/D值和临床症状将 1 0 2例研究对象分为三组 :脐血流S/D≥ 95 th%者 37例为胎儿 -胎盘供血不足组 ;脐血流S/D <95 th%者同时有妊娠合并症及并发症者 4 2例为妊娠合并症和并发症组 ;无任何妊娠合并症和并发症2 3例作为正常妊娠对照组。经彩色和能量多普勒超声检测三组脐动脉、胎盘内绒毛动脉的阻力及计数胎盘内绒毛血管的条数并与妊娠结局相比较。结果 脐血流S/D≥ 95 th%的孕妇胎盘内绒毛血管的数量明显低于正常妊娠组和妊娠合并症、并发症组 ,胎盘内绒毛动脉的S/D值均显著高于其他两组。虽然正常组和妊娠合并症及并发症组脐动脉血流S/D值均小于 95 th% ,但妊娠合并症和并发症组胎盘内绒毛血管的数量显著低于正常组 ,胎盘内绒毛动脉S/D值显著高于正常组。三组中胎儿 -胎盘供血不足组妊娠结局最差 ;妊娠合并症和并发症组胎儿体重和胎盘重量居中 ;正常妊娠无不良围产儿结局。结论 彩色和能量多普勒超声可监测胎盘内绒毛血管数量及绒毛动脉的阻力 。
Objective To study the pathophysiology of placental circulation of high-risk pregnancy by color Doppler flow imaging (CDFI) and power Doppler imaging (PDI), and its significance in predicting the pregnant outcome. Methods The pregnant women were divided into three groups according to umbilical artery (UmA) S/D and clinical disease: 37 in the fetal-placental insufficient group (UmA S/D≥95 th %); 42 in the complicated group (UmA S/D<95 th % with complications); and 23 in normal group (UmA S/D<95 th % without complications). UmA S/D, intraplacental villous vessel (IPVV) and intraplacental villous artery (IPVA) were counted were calculated by Doppler analysis. Pregnant outcomes of the three groups were compared. Results The IPVV with fetal-placental insufficiency was significantly less than in normal and complicated pregnancy. Also, the S/D ratios of IPVA, UmA in the fetal-placental insufficiency group were significantly higher than other two groups. The IPVV with complications was significantly less than the normal group and the S/D ratio of IPVA was significantly higher than the normal group. The outcome of fetal-placental insufficiency group was the worst. Conclusions IPVV and IPVA can be imaged using CDI and CDFI. The velocimetry may provide further insights into the fetal-placental circulation and direct proofs of high-risk pregnancy.
出处
《中国妇产科临床杂志》
2004年第2期85-87,共3页
Chinese Journal of Clinical Obstetrics and Gynecology