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Apnea Hypopnea Index (AHI)

Apnea Hypopnea Index (AHI)

What do we mean by mild/moderate/severe apnea?

Sleep tests allow respiratory therapist and respirologist to detect apneas and hypopneas. The apnea/hypopnea index (AHI) is defined as the number of apneas and hypopneas measured per hour of sleep. The AHI is used to determine the severity of one’s sleep apnea.

Mild : AHI ≥ 5, but < 15 per hour
Moderate : AHI ≥ 15, but < 30 per hour
Severe: AHI ≥ 30 per hour
* Reference to the AASM guidelines

Why measure my Apnea/hypopnea index (AHI)?

Treatment options vary according to sleep apnea severity. Knowing your AHI will allow our healthcare specialists to determine the best therapy for your condition.

Mild apnea, is often treated with  life style modifications. When symptoms indicative of decreased quality of life or systemic health issues are also present, additional therapies such as CPAP can be offered.

Moderate and severe apnea, can be treated by the following:

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