Abstract：
Cohort study of singleton pregnancies with risk factors for placental insufficiency, managed at St. Michael\'s Hospital in Toronto, Canada. Patients undergone UA Doppler assessment at 18-22 weeks\' gestation and 6 weeks postpartum. 15 pregnancies complicated by preeclampsia or intrauterine growth restriction (IUGR) (cases) were compared to 17 unaffected pregnancies (controls). Cases with preeclampsia and/or IUGR had higher UA PI at 18-22 weeks than controls. By 6 weeks\' postpartum, the corresponding mean values were 2.60 and 2.14 (p = 0.20). This preliminary study suggests a potential different trajectory for physiologic recovery of UA flow after a pregnancy affected by placental insufficiency.
摘要：
具有胎盘功能不全危险因素的单胎妊娠的队列研究，在多伦多的圣迈克尔医院管理，加拿大。患者在妊娠18-22周和产后6周接受UA多普勒评估。将15例并发先兆子痫或宫内生长受限（IUGR）的妊娠（病例）与17例未受影响的妊娠（对照）进行了比较。先兆子痫和/或IUGR患者在18-22周时的UAPI高于对照组。产后6周，相应的平均值为2.60和2.14(p=0.20).这项初步研究表明，受胎盘功能不全影响的妊娠后，UA流量的生理恢复可能存在不同的轨迹。
