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.
纵隔阻与硬膜外阻
相比,硬膜外阻
交感
经,引
血流动力学变化,而纵隔阻
同时
心交感和心迷走
经,不引
血流动力学变化。