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<span style="color:#FF0000">This article is a [[stub]].  You can help the '''Apnea Board Wiki''' by expanding it with additional information and sections. For help on the proper way to edit a wiki page, go to the [[Apnea Board Editor Guide]].
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'''Apnea, apnoea, or apnœa''' (from the Greek, meaning ''to breathe'') is a term for suspension of external [[breathing]]. During an obstructive apnea event, the upper airway closes, usually at the pharynx, as the muscles of the throat and tongue relax. There is strong respiratory effort, but inspiration is blocked and very little or no air can enter the lungsDuring a central apnea (CSA) there is no respiratory effort from expansion of the chest and diaphragm [[respiration]] and the volume of the lungs initially remains unchanged. For more details, see also [[Obstructive sleep apnea (OSA)]] and [[Central sleep apnea (CSA)]], and [[Hypopnea]].
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Apnea: 80% to 100% reduction in airflow for >= 10 seconds<br />
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Hypopnea: 50% to 80% reduction in airflow for >= 10 seconds<br />
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Flow Limitation: <50% reduction in airflow for >= 10 seconds<br />
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[[Category:Medical terms]][[Category:Conditions]]

Latest revision as of 04:06, 16 December 2018

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Apnea, apnoea, or apnœa (from the Greek, meaning to breathe) is a term for suspension of external breathing. During an obstructive apnea event, the upper airway closes, usually at the pharynx, as the muscles of the throat and tongue relax. There is strong respiratory effort, but inspiration is blocked and very little or no air can enter the lungs. During a central apnea (CSA) there is no respiratory effort from expansion of the chest and diaphragm respiration and the volume of the lungs initially remains unchanged. For more details, see also Obstructive sleep apnea (OSA) and Central sleep apnea (CSA), and Hypopnea.

Apnea: 80% to 100% reduction in airflow for >= 10 seconds
Hypopnea: 50% to 80% reduction in airflow for >= 10 seconds
Flow Limitation: <50% reduction in airflow for >= 10 seconds




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