The<unk>  or<unk><unk><unk>  Index (AHI) is an index used to indicate the severity of sleep<unk> . It is represented by the number of<unk>  and<unk>  events per hour of sleep. The<unk> s (pauses in breathing) must last for at least 10 seconds and be associated with a decrease in blood oxygenation. Combining AHI and oxygen desaturation gives an overall sleep<unk>  severity score that evaluates both the number of sleep disruptions and the degree of oxygen desaturation (low oxygen level in the blood). The AHI is calculated by dividing the number of<unk>  events by the number of hours of sleep. The AHI values for adults are categorized as: *Normal: AHI<5 *Mild sleep<unk> : 5≤AHI<15 *Moderate sleep<unk> : 15≤AHI<30 *Severe sleep<unk> : AHI≥30 For children, because of their different physiology, an AHI in excess of 1 is considered abnormal. Pediatric patients presenting with AHI of 2 or greater will often be referred for treatment.
Apnea–hypopnea index
Otoacoustic emission
Dichotic listening
Tear break-up time
Polysomnography
Binasal occlusion
Intraocular pressure
Respiratory disturbance index