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Atelectasis (from Greek: á¼ÏÎµÎ»Î®Ï, incomplete + á¼ÎºÏÎ±ÏÎ¹Ï, extension) is defined as the collapse or closure of the lung resulting in reduced or absent gas exchange.
In atelectasis due to airway obstruction with secretions, chest physiotherapy is often useful. Chronic atelectasis usually requires surgical removal of the affected segment or lobe of lung. Antibiotics are given to combat the infection that almost always accompanies secondary atelectasis.a collapsed or airless state of the lung, which may be acute or chronic, and may involve all or part of the lung. The primary cause is obstruction of the bronchus serving the affected area. adj., adj atelectatÂ´ic.. In congenital atelectasis of the fetus or newborn, the lungs fail to expand normally at birth.n acute atelectasis in which there is sudden obstruction of the bronchus, there may be dyspnea and cyanosis, elevation of temperature, a drop in blood pressure, or shock. In the chronic form, the patient may experience no symptoms other than gradually developing dyspnea and weakness.