MB leads little changes of hemodynamics due to inhibit cardiac sympathicotonia and pneumogastric nerve simultaneity, but TEB brings the evident changes due to only inhibit pneumogastric nerve.
阻滞与硬膜外阻滞相比,硬膜外阻滞
交感
经,引起明显血流动力学变化,而
阻滞同时
交感和
迷走
经,不引起明显血流动力学变化。