newshypoxic burdennight-to-night variability
Why One Sleep Study May Not Tell the Whole Story: Night-to-Night Variability, AHI Definitions, and OSA Reclassification
By MedXY|Jun 19, 2026
A recent Chest study shows that PSG metrics vary unevenly across nights, and AHI scored with 4% desaturation is less stable than AHI 3%/arousal. Hypoxic burden was more reproducible and may better reflect true OSA severity.