Results Localized spontaneous pneumothorax occurred in patients with underlying diseases, mainly in patients with severe Chronic obstructive pulmonary disease COPD accounting for 85.
结果发生局限性自发性气胸的病人均有基础疾病，其中以重度慢性阻塞性肺疾病(COPD)病人为主，占所有病人的85。
Objective: to investigate the influencing factors for airflow block in the patients with moderate or severe chronic obstructive pulmonary disease (COPD) and their roles in rehabilitation treatment.
目的：探讨中、重度慢阻肺(COPD)患者气流阻塞的影响因素及康复治疗的指导意义。
Objective: to estimate the efficacy of noninvasive ventilation via face mask in severe respiratory failure (SRF) caused by chronic obstructive pulmonary disease (COPD), and observe its complications.
目的探讨无创面罩通气对慢性阻塞性肺疾病(COPD)引起的重度呼吸衰竭的疗效，并观察其并发症。
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