title: When should patients with COPD be ventilated?
mesh_terms: D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications*; D011379:Prognosis; D012121:Respiration, Artificial; D012131:Respiratory Insufficiency / Q000209:etiology / Q000628:therapy*; D014140:Tracheotomy