Apnea-Hypopnea Index apnea-hypopnea index http://healthysleep.med.harvard.edu/slee...ng-results AHI breathing Total apnea-hypopnea index oxygen desaturation AHI ≥ 15 events/hour. apnea-hypopnea index Apnea Hypopnea Index AHI hypopneic events AHI http://healthysleep.med.harvard.edu/slee...ng-results healthysleep.med.harvard.edu breathing severity of your sleep apnea Apnea Hypopnea Index oxygen desaturation apnea hypopnea index (AHI)