What Is Hypoventilation?
Reviewed: Dr. Gromatzky
2. Hypopnea
Narrowing of passages that deliver oxygen to the lungs is a possible reason for hypoventilation. For those that suffer hypopnea, their airways become restricted during sleep, leading to a condition known as obstructive sleep apnea-hypopnea syndrome. This happens because muscles at the back of the throat relax too much and collapse in on themselves.
This narrows the airway and reduces oxygen flow to the lungs. Sleep studies have shown that those who suffer this condition will often experience disruption to their breathing for as much as 30 seconds. The lack of oxygen then triggers the brain to waken the person so they can adjust and breathe again.
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