床旁纤支镜吸痰联合无创通气治疗COPD并呼吸衰竭疗效观察
상방섬지경흡담연합무창통기치료COPD병호흡쇠갈료효관찰
Effect of bedside Bronchofiberscope sputum suction combined with non-invasive positive pressure ventilation in the treatment of respiratory failure in COPD patients
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