Normal Breathing

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Obstructive Sleep Apnea

Airway Colapses

What is Obstructive Sleep Apnea ?

Sleep apnea usually is a chronic (ongoing) condition that disrupts your sleep. When your breathing pauses or becomes shallow, you’ll often move out of deep sleep and into light sleep.

As a result, the quality of your sleep is poor, which makes you tired during the day. Sleep apnea is a leading cause of excessive daytime sleepiness.

Sleep apnea (AP-ne-ah) is a common disorder in which you have one or more pauses in breathing or shallow breaths while you sleep.

Breathing pauses can last from a few seconds to minutes. They may occur 30 times or more an hour. Typically, normal breathing then starts again, sometimes with a loud snort or choking sound.

What is Apnea Hypopnea Index ?

AHI (Apnea Hypopnea Index) is the number of apneas and hypopneas per hour.  The Greek word “apnea” means “without breath.” You stop breathing during sleep for ten seconds or longer.

During a Hypopnea there is airflow through your throat but at a much reduced level, which leads to not getting enough oxygen. It’s abnormally shallow breathing lasting at least ten seconds.