妊娠期下肢静脉彩色多普勒分析附26例报告

Colour Doppler Angiography on the Low Limb Veins of Twenty - six Healthy Women with Singleton Pregnancy

目的 应用彩色多普勒观察妊娠和体位对于下肢静脉直径和血流速度的影响。方法 26例单胎妊娠患者,其中有3例患者伴下肢静脉曲张。分别于妊娠12wk、24wk、32wk及产后6wk检查下肢静脉的形态和血流动力学变化,连续测量左侧卧位影响的参数。结果 随妊娠早中晚期孕周的增加,下肢静脉内径逐渐增大同时血流速度变慢(P>0.05),产后其变化相反。在妊娠期左下肢血流速度比右下肢慢,但改用左侧卧位测得患者的双下肢血流速度增快。产后6wk的数据显示无统计学意义。3例伴下肢静脉曲张的患者变化更为显著。产后其变化则相反(P<0.05)。妊娠期采取左侧卧位较仰卧位下肢血流速度明显增快,而产后则无显著差异。结论 彩色多普勒对于评估妊娠及产后各阶段下肢静脉的血流动力学改变具有重要价值。

Objectives To investigate gestational and postural changes in diameter and blood flow in Lower extremity veins during pregnancy. Methods Twenty - six healthy women with singleton pregnancy and three of those with varicose . The inner diameter, blood flow velocity and duration of reflux in the veins were consecutively measured at the 12, 24, 32 week of gestation and the 6 week of postpartum. The effects of the left lateral position on above parameters were also consecutively measured. Results An increase in vessel diameter and a fall in flow velocity with increasing gestation was observed( P <0. 05). Delivery had reverse effects. Blood flow velocity was slower in the left side than those in the right, but when adopting left lateral position the flow velocity( F <0. 05)was increased in both legs during pregnancy, and no statistical significance ( P> 0. 05) demonstrated at the 6 week postpartum . Conclusion CDFI is of an important value to assess the homodynamic changes of lower extremity veins during pregnancy and post pregnancy.