title: Efficacy of the ejector flow-meter. A scavenging device for anaesthetic gases.
abstract: Measurements of air concentrations of nitrous oxide and halothane in the breathing zone of the anaesthetist and the operating-room nurse were carried out during inhalation anaesthesia with a Mapleson D system. Gas removal was performed from inside the breathing system at the same rate as that of the fresh gas inflow by means of an ejector flow-meter. The concentrations of nitrous oxide and halothane were maintained below the Danish Threshold Limit Values of 100 and 5 parts per million, respectively, by using this type of scavenging. When these anaesthetics were used simultaneously, the reduced Threshold Limit Values were not exceeded during endotracheal anaesthesia.
authors.forename: D
authors.initials: D
authors.lastname: Obel
authors.forename: S
authors.initials: S
authors.lastname: Jørgensen
authors.forename: A
authors.initials: A
authors.lastname: Ferguson
authors.forename: K
authors.initials: K
authors.lastname: Frandsen
mesh_terms: D000395:Air Pollutants, Occupational; D000776:Anesthesiology / Q000295:instrumentation*; D006221:Halothane; D008452:Maximum Allowable Concentration; D009609:Nitrous Oxide; D009873:Operating Rooms; D012212:Rheology / Q000592:standards*
chemical_list: D000395:Air Pollutants, Occupational; D009609:Nitrous Oxide; D006221:Halothane