title: Test-tube equilibration of volatile anaesthetic concentrations.
abstract: We have measured concentrations of volatile anaesthetics after injection into test-tube assay solutions. In non-agitated tubes, aqueous anaesthetic concentrations decreased significantly throughout 40 min of incubation. Agitation (20-s vortex) of the tubes decreased the aqueous anaesthetic concentration by approximately 80% from concentrations in non-agitated tubes and resulted in more stable liquid anaesthetic concentrations over time. A decrease of less than 15% occurred between 10 and 50 min of incubation.
authors: Department of Anesthesiology, Medical College of Georgia, Augusta 30912-2227.
authors: D C
authors: DC
authors: Martin
authors: J K
authors: JK
authors: Pruett
authors: R S
authors: RS
authors: Aronstam
mesh_terms: D004737:Enflurane / Q000032:analysis*; D006221:Halothane / Q000032:analysis*; D012995:Solubility; D013997:Time Factors
chemical_list: D004737:Enflurane; D006221:Halothane