Objective To study the relation between Doppler umbilical artery flow velocity and serum Nitric Oxide(NO) levels of maternal and umbilical blood in intrahepatic cholestasis of pregnancy(ICP).

• 目的 了解妊娠肝内胆汁淤积症 (ICP)时 ,孕妇血及脐血中一氧化氮 (NO)水平与胎儿脐动脉血流的关系 ,以进一步探讨ICP时胎盘循环阻力增高的原因。