Hecher K, Ville Y, Nicolaides K H
Harris Birthright Research Centre for Fetal Medicine, King's College Hospital Medical School, London, England.
J Ultrasound Med. 1995 Jan;14(1):37-40. doi: 10.7863/jum.1995.14.1.37.
This study evaluates the role of color Doppler ultrasonography in the identification of the communicating placental vessels in pregnancies with twin-twin transfusion syndrome and acardiac twins. In 18 pregnancies with twin-twin transfusion syndrome and two with an acardiac twin, color Doppler studies of the placental vasculature were performed before fetoscopy for laser coagulation of the communicating vessels. In six cases of twin-twin transfusion syndrome the placental attachment of the intertwin membrane could be visualized. Pulsatile arterial blood flow was observed from the donor to the recipient twin that disappeared after laser therapy. In both cases of acardiac twins, one communicating vessel with pulsatile and another vessel with nonpulsatile blood flow in the opposite direction could be identified. Color Doppler imaging is unlikely to play a major role in assisting endoscopic laser separation of chorioangiopagus in patients with acute polyhydramnios, but it may prove to be useful in the early identification of pregnancies at risk of developing twin-twin transfusion syndrome.
本研究评估彩色多普勒超声在双胎输血综合征及无心畸形双胎妊娠中识别胎盘交通血管的作用。对18例双胎输血综合征妊娠及2例无心畸形双胎妊娠，在胎儿镜激光凝固交通血管前进行胎盘血管系统的彩色多普勒检查。在6例双胎输血综合征病例中，可观察到双胎间胎膜的胎盘附着情况。观察到从供血胎儿向受血胎儿有搏动性动脉血流，激光治疗后血流消失。在2例无心畸形双胎病例中，可识别出一条有搏动性的交通血管及另一条血流方向相反的无搏动性血管。彩色多普勒成像在急性羊水过多患者辅助内镜激光分离联体双胎中不太可能起主要作用，但可能在早期识别有发生双胎输血综合征风险的妊娠中证明有用。
