Objective:To evaluate the clinical effect of using permissive hypercapnia ventilation therapy in the treatment of chronic obstructive pulmonary disease(COPD).
目的：总结应用允许的高碳酸血症通气疗法治疗慢性阻塞性肺疾病（COPD）患者的临床疗效。
Objective: To observe physiological effects of permissive hypercapnia(PHC) in gynecological laparoscopic operation and decide extensive use of this ventilation strategy.
目的：观察容许性高碳酸血症对妇科腹腔镜手术患者的生理影响，扩大这一通气策略的应用范围。
Objective: To observe physiological effects of permissive hypercapnia(PHC) in gynecological laparoscopic operation and decide extensive use of this ventilation strategy.
目的：观察容许性高碳酸血症对妇科腹腔镜手术患者的生理影响，扩大这一通气策略的应用范围。
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