Jones P L
Br J Anaesth. 1974 Jul;46(7):534-8. doi: 10.1093/bja/46.7.534.
In an effort to correct misunderstandings and to establish the value of nitrous oxide pressure monitors on anaesthetic machines, the decrease of pressure within the nitrous oxide cylinders has been studied under a variety of clinical conditions. Although the matter had been clarified by 1946, the teaching of several current anaesthetic textbooks is still fallacious since an almost linear fall in cylinder pressure under constant flow conditions has been demonstrated. In addition, premature failure of nitrous oxide cylinder pressure due to cooling of the liquid contents has been noted. The value of cylinder pressure monitors is discussed in the light of these findings.
为了纠正误解并确定麻醉机上氧化亚氮压力监测器的价值，我们研究了在各种临床条件下氧化亚氮气瓶内压力的下降情况。尽管该问题在1946年已得到澄清，但几本现行麻醉学教科书的说法仍然有误，因为已证明在恒定流量条件下气瓶压力几乎呈线性下降。此外，还注意到由于液体内容物冷却导致氧化亚氮气瓶压力过早失效的情况。根据这些研究结果，讨论了气瓶压力监测器的价值。
