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What is Atelectasis? Collapse of part or all of one lung, preventing normal oxygen absorption. Frequent signs and symptoms. Sudden, major collapse: Chest pain. Shortness of breath; rapid breathing. Shock (severe weakness, paleness of skin, rapid heartbeat). Dizziness. Gradual collapse: Cough. Fever. Shortness of breath. No other symptoms. Causes
Definition. Atelectasis is a collapse of lung tissue affecting part or all of one lung. This condition prevents normal oxygen absoption to healthy tissues. Description. Atelectasis can result from an obstruction (blockage) of the airways that affects tiny air scas called alveoli. Alveoli are very thin-walled and contain a rich blood supply.