Conditions InDepth: Sleep Apnea

by Cynthia M. Johnson, MA

En Español (Spanish Version)

Sleep apnea is when breathing stops for a brief time during sleep. It can last for more than 10 seconds. It may happen up to 30 times per hour.

Normal Upper Airway During Sleep
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Lack of sleep affects a person's focus. It may also result in:

Accidents
Coronary artery disease
Stroke
Lung disease
High blood pressure
Diabetes
Kidney disease

The types of apnea are:

Obstructive Sleep Apnea (OSA)

This is when the tissues of the throat relax too much and cave in on each other. This causes a brief block in air flow that may be partial or complete. A person who is overweight may have too much tissue. A deviated septum, nasal polyps, large tonsils, or an elongated soft palate and uvula can also cause the block.

Enlarged tonsils and adenoids are the most common reason for this problem in children.

Central Sleep Apnea (CSA)

This is when the lower brain stem does not send signals to the muscles that control breathing. This can happen when a person has health problems of the brain and central nervous system. Some examples are polio, encephalitis, stroke, and brain tumors. Being born too early is the most common reason for this problem in children.

Mixed Sleep Apnea TOP

This is a mix of both apnea types.

• What are the risk factors for sleep apnea? • What are the symptoms of sleep apnea? • How is sleep apnea diagnosed? • What are the treatments for sleep apnea? • Are there screening tests for sleep apnea? • How can I reduce my risk of sleep apnea? • What questions should I ask my doctor? • Where can I get more information about sleep apnea?

REFERENCES:

Central sleep apnea. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/central-sleep-apnea. Accessed September 17, 2020.

Greenstone M, Hack M. Obstructive sleep apnoea. BMJ. 2014 Jun 17;348:g3745.

Obstructive sleep apnea (OSA) in adults. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/obstructive-sleep-apnea-osa-in-adults. Accessed September 16, 2020.

Sleep apnea. National Heart, Lung, and Blood Institute website. Available at:
...(Click grey area to select URL)
Accessed September 16, 2020.

Sleep apnea information page. National Institute of Neurological Disorders and Stroke website. Available at: https://www.ninds.nih.gov/Disorders/All-Disorders/Sleep-Apnea-Information-Page. Accessed September 16, 2020.

Snoring, sleeping disorders, and sleep apnea. ENThealth—American Academy of Otolaryngology—Head and Neck Surgery website. Available at:
...(Click grey area to select URL)
Accessed September 17, 2020.

What is sleep apnea? American Sleep Apnea Association website. Available at: https://www.sleepapnea.org/learn/sleep-apnea. Accessed September 16, 2020.

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Last reviewed March 2020 by EBSCO Medical Review Board Kari Kassir, MD
Last Updated: 4/6/2021

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