机械通气中的支气管痉挛是呼吸重症监护室（IUCU）常见的一种病理情况，严重的支气管痉挛能导致机械通气逆气峰压值剧增，甚至可产生气压伤及血流动力学衰竭[1]，但呼吸衰竭患者往往对镇静剂及解痉平喘药效果不好，临床处理较棘手，我们曾对XICU的机械通气中的支气管痉挛用肌松 Bronchospasm during mechanical ventilation is a common pathological condition in the respiratory intensive care unit (IUCU). Severe bronchospasm can lead to a dramatic increase in the value of mechanical ventilation against peak apex pressure, and even lead to barotrauma and hemodynamic failure [1 ], But patients with respiratory failure often sedatives and antispasmodic antiasthmatic drugs ineffective, more difficult to deal with clinically, we have mechanical ventilation in the XICU bronchospasm with muscle relaxants