title: Optical end-tidal air-point detector built in a nonrebreathing valve.
mesh_terms: D000388:Air / Q000032:analysis*; D002560:Cerebrovascular Circulation; D004867:Equipment Design; D006801:Humans; D012119:Respiration; D014980:Xenon Radioisotopes / Q000032:analysis*
chemical_list: D014980:Xenon Radioisotopes