Autonomous Oxygen Titration Improves Oxygen Control in Acutely Ill Adults: JAMA

A new study published in the Journal of American Medical Association showed that an automated oxygen titration device decreased times of low and abnormally high blood oxygen levels while helping critically sick hospitalized individuals spend much more time within a safe target oxygen range.

Hospitalized individuals with acute diseases or respiratory issues frequently get supplemental oxygen. However, because oxygen flow is often manually adjusted by professionals, oxygen levels may vary between routine examinations. Oxygen levels that are too high or too low can both be dangerous. Therefore, this study was set to ascertain if an automated system could more successfully than standard clinical care continually modify oxygen administration and maintain blood oxygen saturation within a predefined range.

Between May 2024 and November 2025, four US hospitals participated in this multicenter, unblinded, randomized clinical study. It comprised 300 hospitalized people getting supplementary oxygen due to severe respiratory sickness, burns, trauma, or illnesses requiring immediate surgery. During the first 72 hours, participants were randomized to receive either autonomous oxygen titration or standard care, which involved manual adjustment by doctors. The percentage of time spent with oxygen saturation (SpO₂) between 90% and 96% was the main result. The duration of hypoxemia (SpO₂ below 88%) and hyperoxemia (SpO₂ over 96%) was also measured by researchers.

Patients handled with autonomous oxygen titration spent 85% of their observed time in the target oxygen range, compared to 63% with standard care. This constituted a 21-point improvement. They also spent less time with hypoxemia (2.0% versus 3.6% in the usual-care group).

The automated technology also significantly decreased excess oxygen exposure. Patients spent just 9.2% of their time with oxygen saturation levels above 96%, compared to 29.1% for those getting standard care. The results were similar across prespecified subgroups, which included various skin pigmentation classifications. The autonomous system also utilized less supplementary oxygen, albeit the difference was not significant.

In acutely unwell hospitalized individuals, autonomous oxygen titration significantly enhanced their capacity to keep blood oxygen levels within a set target range. By continually adjusting oxygen supply, the device lowered both low and excessively high oxygen levels when compared to human oxygen adjustment. However, the study focused on oxygenation control rather than clinical outcomes like death, respiratory failure, or hospital duration of stay. More study is needed to evaluate whether enhanced oxygen regulation leads to better outcomes for patients.

Source:

Douin, D. J., Rice, J. D., Xiao, M., Beaty, L. E., Guo, C. J., Withers, C., Sullivan, A., Anderson, E. L., Cheng, A. C., Banasiewicz, M. K., Semler, M. W., Lloyd, B. D., Maiga, A. W., Gibbs, K. W., Stettler, G. R., Khan, A., Sally, M. B., Wright, F. L., Wiktor, A. J., … SAVE-O AI Investigators. (2026). Autonomous oxygen titration for maintaining normoxemia in acutely ill adults: The SAVE-O2 AI randomized clinical trial: The SAVE-O 2 AI randomized clinical trial. JAMA Internal Medicine. https://doi.org/10.1001/jamainternmed.2026.4023