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Concentration and Elimination of Anaesthetic Gases in Operating Theatres Influence of Anaesthesia Apparatus Leakages

Halothane and nitrous oxide (N2O) concentrations were measured in operating theatres, in the areas corresponding to the inhalation zones or the anaesthetists and operating nurses. The measurements were performed in an operating theatre with a non‐recirculating air exchange rate of 20/h. This was performed partly in model experiments and partly during the administration of anaesthesia by intubation.