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.
纵隔阻滞与膜外阻滞,膜外阻滞制交感神,明显血流动力学变化,而纵隔阻滞同时制心交感和心迷走神,不明显血流动力学变化。