obstructive sleep apnea

pathology

Also known as: OSA

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Last updated

July 23, 2026

Quick Summary

Obstructive sleep apnea (OSA) is a common sleep disorder characterized by repeated pauses in breathing during sleep due to the collapse of tissues in the upper airway. This obstruction impedes airflow, leading to reduced oxygen levels in the blood and frequent sleep disruptions.12

OSA is often associated with obesity, particularly excess fat in the neck area, but can also be caused by medical conditions or physical malformations. Symptoms include excessive daytime sleepiness, difficulty concentrating, and loud snoring. Untreated severe OSA can increase the risk of serious health issues like heart disease and hypertension. Treatment typically involves continuous positive airway pressure (CPAP) therapy.12

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sleep apnea
In obstructive sleep apnea (OSA), airway collapse is eventually terminated by a brief awakening, at which point the airway reopens and the person resumes breathing. In severe cases this may occur once every minute during sleep and in turn may lead to profound sleep disruption. In…
Read More
In obstructive sleep apnea (OSA), airway collapse is eventually terminated by a brief awakening, at which point the airway reopens and the person resumes breathing. In severe cases this may occur once every minute during sleep and in turn may lead to profound sleep disruption. In…
Read More