Formula reviewed
Oxygen Desaturation Index (ODI) Calculator
Oxygen Desaturation Index (ODI): Explanation and Clinical Context Oxygen Desaturation Index (ODI) quantifies the number of oxygen desaturation events per hour of sleep, typically defined as a ≥4% drop in oxygen saturation from baseline, lasting at least 10 seconds. It serves as a non-invasive and practical surrogate for the Apnea–Hypopnea Index (AHI) in evaluating sleep-disordered breathing (SDB). An elevated ODI ref