应用彩色多普勒技术对脐带绕颈胎儿的脐动脉（ＵＡ）和腹主动脉（ＡＢＡ）进行了血液动力学检测与分析。资料与方法一、资料将１９９７年１月至１０月就诊于我院门诊及住院的中、晚孕孕妇，无高血压、贫血、妊高征等异常征象的１３３例作为观测对象。确认颈周呈“Ｕ”型或... The color Doppler technique was used to detect and analyze the hemodynamics of umbilical artery (UA) and abdominal aorta (ABA) of umbilical cord around neck fetus. Materials and Methods 1. Data The 133 pregnant women with middle-and late pregnant women who visited our hospital from January to October 1997 and who had no abnormal signs of hypertension, anemia and PIH were taken as observational objects. Confirm neck was “U” type or ...