Written and medically reviewed by Kwaku Osafo-Mensah, MDPulmonary Medicine | Sleep Medicine | Diplomate, American Board of Sleep Medicine (ABSM)Medically reviewed: August 2026 If you have had a sleep study, the first number you may notice in the report is the AHI, or apnea-hypopnea index. AHI is one of the primary measurements used to describe … Continue reading AHI Explained: What Your Apnea-Hypopnea Index Means