title: Do volatile anesthetics act as ideal gases?
abstract: Under conditions of temperature and pressure commonly found in operating rooms, the anesthetics enflurane, halothane, and isoflurane act as nearly ideal gasses even at concentrations producing a saturated vapor phase. The deviations from ideality are 3.44 +/- 0.44% (SEM) for enflurane, 0.94 +/- 0.30% for halothane, and 2.96 +/- 0.29% for isoflurane. That is, 0.9 to 3.4% more anesthetic is vaporized than would be predicted from the vapor pressure of these agents.
mesh_terms: D000776:Anesthesiology / Q000295:instrumentation; D000777:Anesthetics; D004737:Enflurane; D005740:Gases; D006221:Halothane; D007530:Isoflurane; D008738:Methyl Ethers; D055585:Physical Phenomena; D010825:Physics; D011312:Pressure; D013696:Temperature; D014835:Volatilization
chemical_list: D000777:Anesthetics; D005740:Gases; D008738:Methyl Ethers; D004737:Enflurane; D007530:Isoflurane; D006221:Halothane