中晚孕期正常胎儿静脉导管血流动力学探讨.doc

中晚孕期正常胎儿静脉导管血流动力学探讨.doc中晚孕期正常胎儿静脉导管血流动力学探讨中图分类号::A文章编号:1672-3783(2010)-05-0001-04【摘要】目的建立中晚孕期正常胎儿静脉导管多普勒血流参数参考范围。方法应用彩色多普勒超声检查132例16-41孕周正常单胎胎儿。在静脉导管入口处记录静脉导管血流波形,测定血流参数包括:心室收缩期峰值流速⑸、心室舒张期峰值流速(D)、心房收缩期最大流速(A)、平均流速(Vmean)>S/A值、SID值、(S-A)/S值、(S-A)/D值和(S-A)/Vmean值。结果正常胎儿静脉导管的血流参数S、D、A、Vmean随着孕龄的增加而增加()o结论正常胎儿静脉导管血流波形呈特殊的三相波形,血流速度随着孕龄增加而增加,。【关键词】超声检查,产前;静脉导管;血液动力学现象HemodynamicsofDuctusVenosusinNormalFetusDuringSecondandThirdTrimesterNIUMin-chang(DepartmentofUltrasonograghy,HekouHospitalofChineseMedicin巳Hekou257234‘China)【Abstract]ObjectiveToestablishrefereneerangeswithgestationforDopplerparametersoffetalductusvenosus(DV).?MethodsColorDopplerultrasoundwasusedtoexamine132normalsingletonpregnanciesat16-(S-peak).peakvelocityduringventriculardiastole(D-peak),lowestvelocityduringatrialcontrac廿on(Awave)andmeanvelocityjVmean)weremeasuredatDVinletandS/.(S-A)/Sratio,(S-A)/Dratioand(S-A)/:S-peak,D-peak,A-waveandVmeanincreasedwithadvancinggesta廿onalage().