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
制交感神经,引起明显血流动力学变
,
阻滞同时
制心交感和心迷走神经,不引起明显血流动力学变
。