恩氟烷麻醉患者拔管前后血氧饱和度的变化

A Comparative Study of Peripheral Blood Oxygen Saturation Before and After Extubation in Patients under Enflurane Anesthesia

目的 :观察恩氟烷麻醉患者拔管前后血氧饱和度 (SpO2 )变化。方法 :选择ASAⅠ或Ⅱ级择期全麻患者 40例 ,麻醉维持采用持续吸入 2 %恩氟烷并辅用阿曲库铵 ,平均 110min。观察其拔管前、拔管后不吸氧及再吸氧的SpO2 变化。结果 :拔管后不吸氧可引起SpO2 明显降低 (P <0 .0 1) ,再吸氧后则迅速改善。结论 :为预防低氧血症 。

Objective:To survey the changes in peripheral blood oxygen saturation(SpO 2) before and after extubation in patients under enflurane anesthesia. Methods:40 ASA Ⅰ～Ⅱ patients arranged for exploratory laparotomy were selected as subjects of the study. Anesthesia was maintained by continuous inhalation of 2% enflurane supplemented with intermittent intravenous administration of atracurium. The anesthesia lasted one hour and fifty minutes in average. Changes in SpO 2 before and after extubation without and with oxygen inhalation were kept under observation. Results:SpO 2 was found to drop markedly after extubation if oxygen was not given( P <0.01). However, the SpO 2 rose quickly to a normal level if oxygen inhalation was renewed. Conclusion:The authors of the present paper suggest that low flow oxygen should be given routinely to patients after extubation to prevent post operative hypoxia.