Abstract
Introduction
Research related to the result of patients with mild traumatic brain injury and the role of percutaneous oxygen saturation (SpO2) level is rarely reported. Our study investigated the relationship between SpO2 and the 30- and 90-day mortality among patients with mild TBI.
Methods
A total of 1027 patients with mild TBI [Glasgow Coma Scale (GCS) > 12] were enrolled from the Medical Information Mart for Intensive Care (MIMIC-III) database. The patients were classified into low-SpO2 (< 95%), moderate-SpO2 (95–98%), and high-SpO2 groups (> 98%). With 30- and 90-day mortality rates as the main outcomes, Cox regression and confined cubic spline models were adopted.
Results
There was a U-shaped curve in confined cubic splines for the relationship between SpO2 and mortality. Compared with the moderate-SpO2 group, the high-SpO2 group exhibited a much higher risk of mortality after modification, with hazard proportions of 2.108 (95% CI 1.211–3.670, P < 0.05) for the 30-day mortality and 1.760 (95% CI 1.140–2.720, P < 0.05) for the 90-day mortality, and the low-SpO2 group exhibited a much higher risk of mortality after modification, with hazard proportions of 2.215 (95% CI 1.194–4.110, P < 0.05) for the 90-day mortality.
Conclusion
Among patients with mild TBI, the correlation between SpO2 level and 30- and 90-day mortality followed a U-shaped curve. Both low and high SpO2 level exerted potential harmful effects on the outcomes of patients with mild TBI. The SpO2 range of 95–98% could be the optimal SpO2 level for mild patients with TBI.
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Acknowledgements
Funding
The Natural Science Foundation of Guangdong Province, China (Grant number 2020A1515011249) and the Fundamental Research Funds for the Central Universities of China (Grant number: 21620406) supported this research. The study and the journal’s Rapid Service Fee were funded by Angke Biotechnology Co., Ltd.
Author Contributions
Conception and design: Wei Sun, Yusheng Zhang, Jun Lyu. Acquisition of data: Wei Sun, Ling Wang, Shiqi Yuan, Pingping Song, Rongrong Liu. Statistical analysis: Wei Sun, Shiqi Yuan. Interpretation of data: Wei Sun, Ling Wang, Shiqi Yuan, Wenqiang Che. Drafting the article: Wei Sun. Critically revising the article: Yusheng Zhang, Jiamin Xu. Reviewed and approved the submitted version of manuscript: all authors.
Disclosures
Wei Sun, Yusheng Zhang, Jun Lyu. Ling Wang, Shiqi Yuan, Pingping Song, Rongrong Liu, Wenqiang Che, and Jiamin Xu have nothing to disclose.
Compliance with Ethics Guidelines
This article is based on the MIMIC-III database and does not contain any new studies with human participants or animals performed by any of the authors. Ethical approval and the demand for informed consent were waived for our research. The Massachusetts Institute of Technology (Cambridge, MA) and Beth Israel Deaconess Medical Center (Boston, MA) approved the construction of the MIMIC-III database, and approval was obtained for collecting original information.
Data Availability
All data generated in this study is provided in the results and/or in the supplementary material file.
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Sun, W., Wang, L., Yuan, S. et al. Association Between Percutaneous Oxygen Saturation and Mortality of Patients with Mild Traumatic Brain Injury at ICU Admission: An Analysis of the MIMIC-III Database. Adv Ther 40, 2773–2783 (2023). https://doi.org/10.1007/s12325-023-02499-w
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DOI: https://doi.org/10.1007/s12325-023-02499-w