脉搏血氧饱和度与动脉血气在 ICU 患者中研究：描述性横断面研究。
Study of Oxygen Saturation by Pulse Oximetry and Arterial Blood Gas in ICU Patients: A Descriptive Cross-sectional Study.
机构信息
Department of Internal Medicine, Nepal Police Hospital, Nepal.
Department of Internal Medicine, Dhaulagiri Zonal Hospital, Baglung, Nepal.
出版信息
JNMA J Nepal Med Assoc. 2020 Oct 15;58(230):789-793. doi: 10.31729/jnma.5536.
INTRODUCTION
Pulse oximetery is expected to be an indirect estimation of arterial oxygen saturation. However, there often are gaps between SpO2 and SaO2. This study aims to study on arterial oxygen saturation measured by pulse oximetry and arterial blood gas among patients admitted in intensive care unit.
METHODS
It was a hospital-based descriptive cross-sectional study in which 101 patients meeting inclusion criteria were studied. SpO2 and SaO2 were measured simultaneously. Mean±SD of SpO2 and SaO2 with accuracy, sensitivity and specificity were measured.
RESULTS
According to SpO2 values, out of 101 patients, 26 (25.7%) were hypoxemic and 75 (74.25%) were non-hypoxemic. The mean±SD of SaO2 and SpO2 were 93.22±7.84% and 92.85±6.33% respectively. In 21 patients with spO2 less than 90%,the mean±SD SaO2 and SpO2 were 91.63±4.92 and 87.42±2.29 respectively. In 5 patients with SpO2 less 80%, the mean±SD of SaO2 and SpO2 were: 63.40±3.43 and 71.80±4.28, respectively. In non-hypoxemic group based on SpO2 values, the mean±SD of SpO2 and SaO2 were 95.773±2.19% and 95.654±3.01%, respectively. The agreement rate of SpO2 and SaO2 was 83.2%, and sensitivity and specificity of PO were 84.6% and 83%, respectively.
CONCLUSIONS
Pulse Oximetry has high accuracy in estimating oxygen saturation with sp02>90% and can be used instead of arterial blood gas.
简介
脉搏血氧饱和度预计是动脉血氧饱和度的间接估计值。然而，SpO2 和 SaO2 之间经常存在差距。本研究旨在研究重症监护病房患者的脉搏血氧饱和度和动脉血气测量值。
方法
这是一项基于医院的描述性横断面研究，共纳入了 101 名符合纳入标准的患者。同时测量 SpO2 和 SaO2。测量 SpO2 和 SaO2 的平均值±标准差、准确性、敏感性和特异性。
结果
根据 SpO2 值，101 例患者中，26 例（25.7%）为低氧血症，75 例（74.25%）为非低氧血症。SaO2 和 SpO2 的平均值±标准差分别为 93.22±7.84%和 92.85±6.33%。在 21 例 SpO2 小于 90%的患者中，SaO2 和 SpO2 的平均值±标准差分别为 91.63±4.92%和 87.42±2.29%。在 5 例 SpO2 小于 80%的患者中，SaO2 和 SpO2 的平均值±标准差分别为：63.40±3.43%和 71.80±4.28%。在基于 SpO2 值的非低氧血症组中，SpO2 和 SaO2 的平均值±标准差分别为 95.773±2.19%和 95.654±3.01%。SpO2 和 SaO2 的符合率为 83.2%，PO 的敏感性和特异性分别为 84.6%和 83%。
结论
脉搏血氧饱和度在 Sp02>90%时具有较高的准确性，可以替代动脉血气分析。
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