Bio-Monitor Detects Reduced Obstructive Sleep Apnea and Susceptibility to Arrhythmia in Spaceflight.

While in the microgravity environment, apneic and desaturation events completely resolved, reoccurring immediately following landing. Associated electrophysiological features, including complete heart block, were not temporally associated with apneic or desaturation events when present, persisting even when OSA was absent. The participant's use of hypnotic medication in the evening prior to data collection toward the end of flight may have contributed to sporadic apneic episodes, and to longer QT intervals exhibited at that specific timepoint. Mastrandrea CJ, Rabineau J, Greaves D, Hughson RL. Bio-monitor detects reduced obstructive sleep apnea and susceptibility to arrhythmia in spaceflight. Aerosp Med Hum Perform. 2025; 96(12):1084-1089.