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.
纵隔阻滞与硬膜外阻滞相比,硬膜外阻滞抑制交感,引起明显血流动力学变化,而纵隔阻滞同时抑制心交感和心迷走,引起明显血流动力学变化。