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目的探讨影响面罩通气治疗慢阻肺呼吸衰竭的技术因素。方法根据呼吸机性能、面罩特性、通气模式及通气参数的调节分３期，比较面罩通气的效果和副作用。结果面罩的材料、气垫的充盈度、固定方法可影响患者的舒适度和通气的密闭性。压力支持通气（ＰＳＶ）的同步性好、有效通气量高。呼吸中枢兴奋性低下或呼吸肌严重疲劳时，需改用辅助／控制（Ａ／Ｃ）模式。ＰＳＶ或Ａ／Ｃ模式应从低压力或低容量起始逐渐过渡到高压力或高容量。面罩通气的比例、有效率、住院患者的总有效率由早期的４８％，４６％，７２％升至中期的７９％，６７％，７２％和近期的８５％，８３％，８１％。鼻梁部糜烂和胃胀气的比例逐渐下降，３期分别为２７％，４６％；１２％，３８％；７％，２１％。结论呼吸机性能、面罩特性、通气模式的选择和通气参数的调节会影响面罩通气的成败。
Objective To explore the technical factors that affect mask ventilation in treating COPD patients. Methods According to the ventilator performance, mask characteristics, ventilation mode and ventilation parameters adjusted three phases, the effect of mask ventilation and side effects. As a result, the material of the mask, the degree of filling of the cushion, and the method of fixation can affect the comfort of the patient and the hermeticity of the ventilation. Pressure support ventilation (PSV) with good synchronization, effective ventilation. Respiratory center hypopotensive or severe respiratory muscle fatigue, the need to switch to Auxiliary / Control (A / C) mode. PSV or A / C mode should gradually transition from low pressure or low capacity to high pressure or high capacity. The total effective rate of mask ventilation increased from 48%, 46% and 72% in early stage to 79%, 67% and 72% in mid-term and 85%, 83% and 81% in recent days respectively. The proportion of nasal parts erosion and flatulence decreased gradually, with 27% and 46% respectively in 3 stages, 12% and 38%, 7% and 21% respectively. Conclusion Ventilator performance, mask characteristics, choice of ventilation mode, and ventilation parameters may affect the success or failure of mask ventilation.