[Clinical value of noninvasive positive-pressure ventilation in chronic obstruction pulmonary disease combined with type II respiratory failure: a 4-year retrospective study].
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011175:Positive-Pressure Respiration / Q000379:methods*; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications / Q000628:therapy*; D012131:Respiratory Insufficiency / Q000209:etiology / Q000628:therapy*; D012189:Retrospective Studies