在常规的定容或定压呼吸机中,使用压力触发时,必须要达到呼吸机操作人员所设定的压力灵敏度,病人才可以得到一次指令通气或一次自主呼吸,如果没有达到这个压力灵敏度,病人即使有吸气努力,也不会有新鲜气体进入到病人的肺中。那么压力灵敏度的设定就存在一定的矛盾,当设置的值比 In conventional constant volume or constant pressure ventilator, the use of pressure to trigger, you must reach the ventilator operator set the pressure sensitivity, the patient can get a command ventilation or a spontaneous breathing, if you do not meet this pressure sensitivity, Even if the patient has an inspiratory effort, no fresh gas will enter the patient’s lungs. Then the pressure sensitivity setting there is a certain contradiction when setting the value ratio