An automated controller held hospitalized adults inside their prescribed oxygen range 85% of the time, against 63% for patients whose oxygen flow was adjusted by hand, in a randomized trial published on August 3, 2026 in JAMA Internal Medicine. The trial was led by researchers at the University of Colorado Anschutz School of Medicine and enrolled 300 adults at four US hospitals between May 6, 2024 and November 17, 2025, with the protocol registered before the first patient. Participants were…