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The effect of partial pressure of isoflurane on its solubility in blood of different haematocrit was determined at different isoflurane partial pressures, using a syringe-flask method and gas chromatography with Mood from one donor. The silnbrany of isoflurane decreased with increasing blood haematocrit (39.5%, 51.9% and 61.9%) and isoflurane partial pressve from 1 MAC to 4 MAC. The solubility in 50% and 60% haematocrit blood at 2, 3 and 4 MAC was significantly different from the solubility in normal blood at 1 MAC (P<0.05). We conclude that the solution of isoflurane in blood (especially in high haematocrit blood) does not obey Henry’s law.
The effect of partial pressure of isoflurane on its solubility in blood of different haematocrit was determined at different isoflurane partial pressures, using a syringe-flask method and gas chromatography with Mood from one donor. The silnbrany of isoflurane decreased with increasing blood haematocrit (39.5% , 51.9% and 61.9%) and isoflurane partial press from 1 MAC to 4 MAC. The solubility in 50% and 60% haematocrit blood at 2, 3 and 4 MAC was significantly different from the solubility in normal blood at 1 MAC (P < 0.05). We conclude that the solution of isoflurane in blood (especially in high haematocrit blood) does not obey Henry’s law.