目前,机械通气已成为危重患儿抢救治疗的重要手段,当患儿自主呼吸达到适当水平的呼吸功能时,及时撤离呼吸机对于患儿的恢复和减少并发症十分重要。所谓撤机是指逐渐降低机械通气支持水平,逐步恢复患者自主呼吸,由完全或部分机械作功转为呼吸肌作功,最终脱离呼吸机的过程。 At present, mechanical ventilation has become an important means of rescue and treatment of critically ill children. When children spontaneously breathe to achieve the appropriate level of respiratory function, timely withdrawal from the ventilator is very important for children’s recovery and reduce complications. The so-called weaning refers to gradually reduce the level of mechanical ventilation support, and gradually restore the patient’s spontaneous breathing, by the complete or partial mechanical work into respiratory muscle work, and ultimately from the ventilator process.