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首页> 外文期刊>Human Reproduction >Different changes in resistance index between uterine artery and uterine radial artery during early pregnancy.
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Different changes in resistance index between uterine artery and uterine radial artery during early pregnancy.

机译：妊娠早期子宫动脉和子宫radial动脉阻力指数的不同变化。

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摘要

BACKGROUND: Changes in blood flow impedance of the uterine artery (UA) and uterine radial artery (RA) which is in the lower-extremity of the UA were examined during early pregnancy. METHODS: Blood flow impedance was assessed by transvaginal color-pulsed-Doppler-ultrasonography in 72 women from weeks 4-16 of pregnancy and expressed as a resistance index (RI). RESULTS: RA-RI remained at the late-luteal phase level until the 5th week of pregnancy, decreased until the 7th week, and remained low until the 10th week. UA-RI remained at the late-luteal phase level until the 10th week, and then gradually decreased until the 16th week. In nine women with spontaneous abortion, five out of six women with impaired growth of the gestational sac showed high RA-RI at the 6th week of pregnancy, whereas all three women with loss of fetal heart beat at the 8th week showed normal changes in RA-RI. CONCLUSIONS: Our results show different changes in blood flow impedance between the UA and RA during early pregnancy. A significant decrease of RA-RI after the 5th week may reflect vascular remodeling in the maternal-fetal interface at placentation, whereas a significant decrease of UA-RI after the 10th week may reflect changes of the whole uterine blood flow associated with uterine growth.
机译：背景：在妊娠早期检查了位于下肢的子宫动脉（UA）和子宫radial动脉（RA）的血流阻抗变化。方法：通过经阴道彩色脉冲多普勒超声检查评估了妊娠4-16周的72名妇女的血流阻力，并表示为抵抗指数（RI）。结果：RA-RI一直保持在黄体晚期，直到怀孕第5周为止，一直下降到第7周为止，并且一直保持低水平直到第10周。 UA-RI保持在黄体晚期阶段水平直到第10周，然后逐渐下降直到第16周。在9名自然流产妇女中，妊娠囊生长受损的6名妇女中有5名在怀孕第6周显示出高RA-RI，而在妊娠第8周时所有三名胎儿心跳消失的妇女均显示出RA正常变化-RI结论：我们的研究结果表明，妊娠早期UA和RA之间的血流阻抗有不同的变化。第5周后RA-RI的显着下降可能反映了胎盘形成时母胎界面的血管重构，而第10周后UA-RI的显着下降可能反映了与子宫生长相关的整个子宫血流的变化。

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