Asphyxia/prevention & control; Bronchoscopy/methods; Cough/prevention & control; Hemorrhage/drug therapy; Lung Diseases/drug therapy; Adrenergic beta-Antagonists/therapeutic use; Antihypertensive Agents/therapeutic use; Antitussive Agents/therapeutic use; Asphyxia/diagnosis; Asphyxia/pathology; Asphyxia/surgery; Cough/diagnosis; Cough/pathology; Cough/surgery; Embolization, Therapeutic; Hemorrhage/diagnosis; Hemorrhage/pathology; Hemorrhage/surgery; Humans; Hypnotics and Sedatives/therapeutic use; Intubation, Intratracheal; Lung/blood supply; Lung/drug effects; Lung/pathology; Lung/surgery; Lung Diseases/diagnosis; Lung Diseases/pathology; Lung Diseases/surgery