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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
Usually seen in tension pneumothorax, pleural effusion, abdominal distention and intrathoracic lesions, this occurs when pleural pressure seizes the lungs, keeping it near the chest wall. As the pressure disappears, the lung eventually recoils, causing atelectasis. This is also coined as passive atelectasis.