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→AHI (Apnea Hypopnea Index)
The '''Apnea-Hypopnea Index (AHI)''' is used as a measure of the severity of the condition known as [[sleep apnea]]. The AHI score consists is the sum of the number of [[apneas]] (pauses in breathing) plus the number of [[hypopneas]] (periods of shallow breathing) that occur each hour. To count in the index apneas and hypopneas , collectively called events, must have a duration of at least 10 seconds.
The AHI, as with the separate [[Apnea Index]] and [[Hypopnea Index]], is calculated by dividing the number of events by the number of hours of sleep.
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