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The AHI is calculated by dividing the number of apnea events by the number of hours of sleep. The AHI values for adults are categorized as: [1] [2] Normal: AHI<5; Mild sleep apnea: 5≤AHI<15; Moderate sleep apnea: 15≤AHI<30; Severe sleep apnea: AHI≥30; For children, because of their different physiology, an AHI in excess of 1 is considered ...
CPAP is the most effective treatment for moderate to severe obstructive sleep apnea, in which the mild pressure from the CPAP prevents the airway from collapsing or becoming blocked. [ 1 ] [ 2 ] CPAP has been shown to be 100% effective at eliminating obstructive sleep apneas in the majority of people who use the therapy according to the ...
A CPAP machine is the most common sleep apnea treatment. It delivers continuous air pressure as you inhale and exhale. Auto-adjusting positive airway pressure (APAP) machine.
These devices can be fabricated by a general dentist. Oral appliance therapy (OAT) is usually successful in patients with mild to moderate obstructive sleep apnea. [102] [103] While CPAP is more effective for sleep apnea than oral appliances, oral appliances do improve sleepiness and quality of life and are often better tolerated than CPAP. [103]
The respiratory disturbance index (RDI)—or respiratory distress Index—is a formula used in reporting polysomnography (sleep study) findings. Like the apnea-hypopnea index (AHI), it reports on respiratory distress events during sleep, but unlike the AHI, it also includes respiratory-effort related arousals (RERAs). [1]
The pressure required by most patients with sleep apnea ranges between 6 and 14 cm H 2 O. A typical CPAP machine can deliver pressures between 4 and 20 cm H 2 O. More specialised units can deliver pressures up to 25 or 30 cm H 2 O. CPAP treatment can be highly effective in treatment of obstructive sleep apnea.