Smith D C, Crul J F
Instituut voor Anesthesiologie, Sint Radboud Ziekenhuis, Nijmegen, The Netherlands.
Br J Anaesth. 1988 Nov;61(5):625-7. doi: 10.1093/bja/61.5.625.
The incidence of immediate postoperative hypoxaemia following general anaesthesia was studied using a pulse oximeter in 120 ASA category I and II patients during transport to the recovery room. Thirty-two percent of those not given oxygen during transport developed desaturation (SaO2 less than 90%) in spite of receiving 100% oxygen for 5 min before transport. In 14.3% of patients SaO2 decreased to less than 85%. None of the patients given oxygen 2 litre min-1 via a nasopharyngeal catheter during transport exhibited an SaO2 less than 90%. The only variable which correlated with the development of desaturation was the duration of anaesthesia.
在120例美国麻醉医师协会（ASA）分级为I级和II级的患者运送至恢复室期间，使用脉搏血氧仪研究了全身麻醉后即刻低氧血症的发生率。在运送过程中未吸氧的患者中，尽管在运送前接受了5分钟的100%氧气吸入，但仍有32%出现了氧饱和度降低（动脉血氧饱和度[SaO2]低于90%）。14.3%的患者SaO2降至低于85%。在运送过程中通过鼻咽导管以2升/分钟的速度给予氧气的患者中，没有一例患者的SaO2低于90%。与氧饱和度降低发生相关的唯一变量是麻醉持续时间。
