title: Thirty years of mechanical ventilation. Changing implications.
mesh_terms: D000328:Adult; D000368:Aged; D003243:Consciousness; D003422:Critical Care; D003643:Death; D003657:Decision Making; D004992:Ethics, Medical; D005190:Family; D005260:Female; D006666:History of Medicine; D006801:Humans; D007883:Legislation, Medical / Q000639:trends*; D008171:Lung Diseases / Q000628:therapy; D008297:Male; D008875:Middle Aged; D010817:Physician-Patient Relations; D012121:Respiration, Artificial / Q000266:history*; D013997:Time Factors; D014474:Unconsciousness; D014481:United States