GLOSSARY

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Hypersomnia : A group of disorders in which the primary complaint is excessive daytime sleepiness. (direct link)

Hypnogram : A graphic representation of the sequence of the various stages of sleep (non-REM and REM). (direct link)

Hypopnea : A significant decrease in breathing during sleep that can be associated with hypoxemia or microarousals. Hypopnea is a respiratory disorder observed in sleep-related breathing disorders. (direct link)

Hypoxemia : A reduction in the concentration of oxygen transported in the blood by hemoglobin. It is observed in patients with sleep-related breathing disorders and certain lung diseases. (direct link)

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