A partial or full collapse of one lung, therefore preventing normal oxygen absorption. Since blood continues to flow through this lung, however, there is a exaggerated effect on the ability of the lungs to oxygenate the blood.
Causes of Atelectasis
Atelectasis can be caused by obstruction of small or large lung air passages. This can be caused by thick mucous plugs from infection or other disease, including: cystic fibrosis. Tumors in the air passages, tumors or blood vessels outside the air passages which causes pressure on airway, inhaled objects, prolonged chest or abdominal surgery with general anesthetic, chest injury or fractured ribs, penetrating wound, and enlarged lymph glands can all produce atelectasis.
Signs and Symptoms of Atelectasis
Symptoms of sudden major collapse of a portion of the airways include chest pain, shortness of breath, dizziness and rapid breathing. Shock may develop in severe cases with pallor, rapid heart rate and extreme weakness. Symptoms of gradual collapse include cough, fever, shortness of breath. If the portion of the airway affected is small enough and the progression slow enough, there may not be any symptoms.
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Medical Content Last Updated on 07/12/2008
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