Objective: To evaluate the PB840 ventilator mask noninvasive pressure support ventilation for hypoxemia in patients recovering from general anesthesia. Method: 40 patients met the diagnostic criteria for hypoxemia in recovering from general anesthesia were randomly divided into 2 groups, non-invasive ventilation group ( n = 20 ), standard oxygen therapy group ( n = 20). Non-invasive ventilation group were given the mask noninvasive pressure support ventilation after fixation of mask, the standard oxygen therapy group were given oxygen masks and oxygen flow rate 3-5L / min. Result: Non-invasive ventilation group:18 patients at 2 hours after the breathing, heart rate gradually decreased to the normal range, oxygen saturation rose to the ideal range (98％), and failed in 2 cases. Standard oxygen therapy group: After treatment,the breathing and heart rate of 15 cases were gradually decreased to the normal range, the oxygen saturation gradually increased to the ideal range (95％ ), and failed in 5 cases. Conclusion: PB840 ventilator via mask pressure support noninvasive ventilation in the treatment of hypoxemia in patients recovering from anesthesia is more effective than standard oxygen therapy group , and decreased tracheal re-intubation or tracheostomy rate and shorten the time of ICU.%目的:评价用PB840呼吸机行面罩无创压力支持通气对全麻恢复期低氧血症患者的疗效.方法:将40例符合诊断标准的全麻恢复期低氧血症患者随机分为两组,即无创通气组(n=20),标准氧疗组(n=20),进行分组治疗.无创通气组在患者面罩固定后,给予经面罩无创压力支持通气,标准氧疗组给予面罩供氧,氧流量3-5L/min.结果:无创通气组:18例患者在2h后呼吸、心率均逐渐降至正常范围,氧饱和度上升至理想范围(98%左右),失败2例.标准氧疗组:15例患者经治疗后呼吸、心率均逐渐降至正常范围,氧饱和度逐渐上升至理想范围(95%左右),失败5例.结论:以PB840呼吸机行经面罩无创压力支持通气治疗全麻恢复期低氧血症患者疗效优于标准氧疗组,并降低了气管再插管或气管切开率,缩短了患者ICU时间.
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