【摘要】 目的　应用彩色多普勒超声检测胎儿脐动脉血流参数 ,对胎儿脐带绕颈进行分型 ,以此严格掌握分娩方式 ,从而降低临床剖宫产率。方法　选择足月妊娠待产者 ,检测产前 1～ 3d内的胎儿脐动脉血流 ,对 6 2例有脐带绕颈与 5 0例无脐带绕颈胎儿脐动脉血流参数 ,包括阻力指数 (RI)、收缩期最大血流速度与舒张末期最小血流速度比值 (S/D )进行对比观察分析 ,并对其进行松绕与紧绕的分型。结果　RI、S/D在脐带绕颈松绕型组与无脐带绕颈组差异无显著性意义 (P >0 .0 5 ) ,而紧绕型组与上述两组差异有显著性意义 (P <0 .0 0 1)。脐带绕颈在产程中致胎儿宫内窘迫者在 49例松绕型组有 6例 ,13例紧绕型组有 7例。结论　应用彩色多普勒超声检测脐动脉血流参数 ,观察脐带绕颈的分型 ,特别是临产前连续 1～ 3d内检出的紧绕型脐带绕颈 ,可做为剖宫产的指征 ,对产科临床分娩方式的选择具有指导意义。更多还原

【Abstract】 Objective To observe umbilicus artery blood flow parameter in fetus and categorize types of umbilical cord around the neck (UCAN) by color Doppler ultrasonography according to tight and loose so that delivery mode could be decided correctly and clinical caesarean section rate could be decreased.Methods The umbilicus artery flow in 62 cases of mature pregnancy fetus with UCAN were examined during 1～3 days before childbirth to compare with those in 50 cases without UCAN. RI and S/D of the umbilical cord artery flow were compared in the two groups. Fetus with UCAN were grouped into tight and loose types.Results There was no obvious difference of RI and S/D between fetus with the loose UCAN and without UCAN (P> 0.05 ), while there was significant difference among UCAN of the tight type and the other tow groups (P< 0.001 ). The fetus of UCAN were led to stifle in the womb during childbirth, including 6 cases of the loose type (6/49) and 7 cases of tight ones (7/13).Conclusions Color Doppler ultrasonography may be clinically useful in observing umbilicus artery blood flow parameter in fetus and categorizing types of UCAN as tight and loose ones,which can be the predictive indication of caesarean section.更多还原