Albin R J, Criner G J, Thomas S, Abou-Jaoude S
Department of Medicine, University of Maryland School of Medicine and Hospital, Baltimore.
Chest. 1992 Dec;102(6):1672-5. doi: 10.1378/chest.102.6.1672.
Random assessments of SaO2 were performed via pulse oximetry in 274 hospitalized non-ICU patients prescribed supplemental O2 in a large tertiary care university hospital. In 507 assessments performed in patients inspiring the prescribed O2, 426 were receiving excessive amounts of O2 to maintain a SaO2 > or = 92 percent. In 233 of these assessments, SaO2 was > or = 92 percent while breathing ambient air. In an additional 193 assessments, the concentration of inspired supplemental O2 was excessive to maintain a SaO2 > or = 92 percent. However, in 81 assessments performed in patients inspiring O2, the prescribed amount was insufficient to maintain SaO2 > or = 92 percent. These results indicate that O2 prescription in hospitalized non-ICU patients is excessive or not required in the majority of cases. Furthermore, routine use of pulse oximetry in hospitalized patients prescribed O2 may be useful in determining the continued need for supplemental O2 and adjusting the proper concentration needed to avoid hypoxemia.
在一家大型三级护理大学医院中，对274名住院的非重症监护病房且接受补充氧气治疗的患者，通过脉搏血氧饱和度仪进行了随机的血氧饱和度（SaO2）评估。在对接受规定氧气治疗的患者进行的507次评估中，有426次为维持SaO2≥92%而接受了过量的氧气。在其中233次评估中，患者呼吸环境空气时SaO2≥92%。在另外193次评估中，吸入的补充氧气浓度过高，以维持SaO2≥92%。然而，在对接受氧气治疗的患者进行的81次评估中，规定的氧气量不足以维持SaO2≥92%。这些结果表明，在大多数情况下，住院非重症监护病房患者的氧气处方过量或不需要。此外，对接受氧气治疗的住院患者常规使用脉搏血氧饱和度仪，可能有助于确定是否持续需要补充氧气，并调整避免低氧血症所需的合适浓度。
