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.
纵隔与硬膜
相比,硬膜
抑制交感神经,
显血流动力
变化,而纵隔
同时抑制心交感和心迷走神经,不
显血流动力
变化。