Rosenberg P H, Alila A
Anaesthesia. 1984 Jun;39(6):581-3. doi: 10.1111/j.1365-2044.1984.tb07367.x.
Thymol may accumulate in halothane vaporizers and influence their accuracy. We determined the thymol concentration in residual liquid halothane of 28 vaporizers in regular use. Two halothane samples were brownish, probably due to a long exposure to light and irregular drainage. Irregularly drained vaporizers contained higher thymol concentrations than those drained weekly (p less than 0.05). The highest individual thymol concentration was 19 times that found in fresh halothane. Halothane vapour concentration deviated most from setting in Fluotec Mark II vaporizers, but this did not correlate with thymol concentrations in halothane liquid. The need for weekly drainage and regular service of halothane vaporizers is stressed.
百里酚可能会在氟烷蒸发器中蓄积并影响其准确性。我们测定了28台经常使用的蒸发器中残留液态氟烷中的百里酚浓度。有两份氟烷样品呈褐色，可能是由于长期暴露于光照和排水不规律所致。排水不规律的蒸发器中百里酚浓度高于每周排水的蒸发器（p小于0.05）。单个百里酚的最高浓度是新鲜氟烷中浓度的19倍。Fluotec Mark II型蒸发器的氟烷蒸汽浓度与设定值偏差最大，但这与氟烷液体中的百里酚浓度无关。强调了氟烷蒸发器每周排水和定期维护的必要性。
