Pesonen P
International Committee of the Red Cross, Geneve, Switzerland.
Can J Anaesth. 1991 Jul;38(5):592-4. doi: 10.1007/BF03008190.
Ketamine anaesthesia with spontaneous breathing of air is a common method of anaesthesia in Red Cross hospitals for war wounded. Arterial oxygen saturation of 65 patients was measured with a portable pulse oximeter during the anaesthesia and the first 30 min of recovery. The patients were young (12-47 yr), haemodynamically stable and underwent peripheral surgery. Fifty-seven measurements were free from artefacts and were analyzed. The results showed that during induction six patients (11%) had a brief period (40-420 sec) of oxygen saturation under 90%. Two of these patients showed signs of upper airway obstruction and four breathed normally. During maintenance one patient had short periods (40-80 sec) of saturation under 90%, when he snored. No periods of desaturation occurred during the recovery period. It is concluded that arterial oxygen saturation remained acceptable when patients breathed air during ketamine anaesthesia.
在红十字医院，对战争伤员采用氯胺酮麻醉并自主呼吸空气是一种常用的麻醉方法。在麻醉期间及苏醒后的前30分钟，使用便携式脉搏血氧仪对65例患者的动脉血氧饱和度进行了测量。患者均为年轻人（12 - 47岁），血流动力学稳定，接受外周手术。57次测量无伪差并进行了分析。结果显示，诱导期有6例患者（11%）出现短时间（40 - 420秒）血氧饱和度低于90%的情况。其中2例患者表现出上呼吸道梗阻迹象，4例呼吸正常。维持期有1例患者打鼾时出现短时间（40 - 80秒）饱和度低于90%的情况。恢复期未出现血氧饱和度下降的情况。结论是，氯胺酮麻醉期间患者自主呼吸空气时，动脉血氧饱和度仍可接受。
