Kelly D A
Anaesthesia. 1985 Jul;40(7):661-3. doi: 10.1111/j.1365-2044.1985.tb10946.x.
A previously unreported hazard of free-standing 'Tec' type vaporizers relating to their positioning downstream of the oxygen flush is presented. Three Enfluratec Mark III vaporizers were studied; measurement of delivered enflurane concentration was performed at a flow rate of 8 litres/minute, during and after the application of the oxygen flush upstream of the vaporizer. The maximum difference between the dial setting and the measured vapour concentration occurred when a 5-second flush was applied to a vaporizer set at 0.2 volume %, the peak vapour concentration recorded being 2.3%. Other hazards of free-standing vaporizers are discussed and ways of avoiding these hazards considered.
本文介绍了独立式“Tec”型蒸发器的一种先前未报道的风险，该风险与其在氧气快速冲洗下游的位置有关。对三台恩氟烷蒸发器Mark III进行了研究；在蒸发器上游应用氧气快速冲洗期间及之后，以8升/分钟的流速测量输送的恩氟烷浓度。当对设置为0.2%容积的蒸发器进行5秒快速冲洗时，刻度盘设置与测得的蒸汽浓度之间的最大差异出现，记录的峰值蒸汽浓度为2.3%。文中讨论了独立式蒸发器的其他风险，并考虑了避免这些风险的方法。
