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为探讨机械通气在老年急性呼吸衰竭（Ⅱ型）中的应用，对１０１例次急性呼吸衰竭（ＡＲＦ）患者经鼻气管插管，插管后给予ＳｅｒｖｏＶｅｎｔｉｌａｔｏｒ９００Ｂ或９００Ｃ机械通气为主的综合治疗。机械通气时，吸氧浓度（ＦｉＯ２）为３０％～４０％，吸气时间为２５％，停顿时间为１０％吸入潮气量一般为５００～６００ｍｌ，呼吸频率一般为１４～１８次／分；呼吸模式为容量控制，触发灵敏感度为－０．１９６ｋＰａ（－２ｃｍＨ２Ｏ），湿化温度一般为３４℃左右。机械通气２小时，动脉血气改善，一般情况好转。较固定的通气模式及参数在抢救老年ＡＲＦ（Ⅱ型）中起到较好效果
To investigate the application of mechanical ventilation in elderly patients with acute respiratory failure (type Ⅱ), 101 patients with acute respiratory failure (ARF) were treated with nasotracheal intubation and general anesthesia with ServoVentilator 900B or 900C after intubation. Mechanical ventilation, oxygen concentration (FiO2) of 30% to 40%, inspiratory time was 25%, pause time was 10% of the tidal volume of inhalation is generally 500 ~ 600ml, respiratory rate is generally 14 to 18 beats / min; breathing Mode for the capacity control, trigger sensitivity of -0.196kPa (-2cmH2O), humidification temperature is generally about 34 ℃. Mechanical ventilation for 2 hours, arterial blood gas improved, the general situation improved. More fixed ventilation mode and parameters in the rescue of elderly ARF (type Ⅱ) played a better effect