无创正压通气治疗慢性阻塞性肺疾病急性加重合并呼吸衰竭的疗效观察
무창정압통기치료만성조새성폐질병급성가중합병호흡쇠갈적료효관찰
Effect of Noninvasive Positive Pressure Ventilation in the Treatment of Acute Exacerbation of Chronic Obstructive Pulmonary Disease with Res-piratory Failure