中脑动脉 血液流动速度 在正常怀孕期间
Esra Erkoç Ataoğlu1, Hale Batur Çağlayan1, Bijen Nazliel1
1Department of Neurology, Faculty of Medicine, Gazi University.
The neurologist
|August 22, 2023
概括
跨骨多普勒超声波 (TCD) 显示孕妇中脑动脉 (MCA) 血流速度下降. 这些发现凸显了TCD的重要意义.
科学领域:
- 神经学 神经学
- 产科 产科 产科 产科 产科
- 血管超声波是指血管超声波.
背景情况:
- 在怀孕期间,母亲的脑血流适应至关重要.
- 评估中脑动脉 (MCA) 血流速度,可以了解母亲的血液动力学.
- 体多普勒 (TCD) 超声波为此类评估提供了一种非侵入性方法.
研究的目的:
- 为了评估健康的孕妇在不同季度的休息MCA血流速度.
- 为了将这些速度与非怀孕的健康对照者的速度进行比较.
- 为了研究整个妊娠期间大脑血流参数的变化.
主要方法:
- 105名健康的孕妇和25名对照人接受了TCD检查.
- 参与者按三个月分组:第一个 (7-13周),第二个 (14-28周) 和第三个 (29-42周).
- TCD评估了平均流速,最大抽缩速度,终端放缩速度,S/D比率,脉动性指数 (PI) 和阻力指数 (RI).
主要成果:
- 在所有组中观察到MCA平均血流速度的显著差异 (P <0.001).
- 与所有孕妇组相比,对照组的速度更高 (P <0.01到P <0.001).
- 随着妊娠的推进,MCA的平均和峰值血流速度,PI和RI逐渐下降.
结论:
- TCD是一种安全有效的工具,用于监测怀孕期间母亲的大脑血流.
- 在MCA速度,PI和RI的逐渐下降表明受化学和神经元因素影响的生理适应.
- 建议进行进一步的TCD研究,以确定整个怀孕期间的规范性脑血流值.
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