title: Malfunctioning unidirectional valves of Ohmeda Series 5 and 5A carbon dioxide absorbers.
authors.forename: D G
authors.initials: DG
authors.lastname: Whalley
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis; D004868:Equipment Failure; D006801:Humans; D012119:Respiration; D012121:Respiration, Artificial / Q000295:instrumentation*
chemical_list: D002245:Carbon Dioxide