Sleep
apnea is a serious sleep disorder that occurs when a person's breathing
is interrupted during sleep. People with untreated sleep apnea stop
breathing repeatedly during their sleep, sometimes hundreds of times.
This means the brain -- and the rest of the body -- may not get enough
oxygen.
There are two types of sleep apnea:
Obstructive sleep apnea (OSA): The more common of the two forms of
apnea, it is caused by a blockage of the airway, usually when the soft
tissue in the back of the throat collapses during sleep.
Central
sleep apnea: Unlike OSA, the airway is not blocked, but the brain fails
to signal the muscles to breathe due to instability in the respiratory
control center.
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