A large tumor can press against and deflate the lung, as opposed to blocking the air passages.įactors that make you more likely to develop atelectasis include: Scarring could be caused by injury, lung disease or surgery. Air leaks into the space between your lungs and chest wall, indirectly causing some or all of a lung to collapse. Various types of pneumonia, a lung infection, can cause atelectasis. This condition involves the buildup of fluid between the tissues (pleura) that line the lungs and the inside of the chest wall. Chest trauma - from a fall or car accident, for example - can cause you to avoid taking deep breaths (due to the pain), which can result in compression of your lungs. Possible causes of nonobstructive atelectasis include: An abnormal growth can narrow the airway. Atelectasis is common in children who have inhaled an object, such as a peanut or small toy part, into their lungs. Mucus plugs are also common in children, people with cystic fibrosis and during severe asthma attacks. Suctioning the lungs during surgery helps clear them, but sometimes they still build up. Drugs given during surgery make you breathe less deeply, so normal secretions collect in the airways. It commonly occurs during and after surgery because you can't cough. A mucus plug is a buildup of mucus in your airways. Obstructive atelectasis may be caused by many things, including: It often occurs after heart bypass surgery. Nearly everyone who has major surgery develops some amount of atelectasis. It changes your regular pattern of breathing and affects the exchange of lung gases, which can cause the air sacs (alveoli) to deflate. General anesthesia is a common cause of atelectasis. Atelectasis occurs from a blocked airway (obstructive) or pressure from outside the lung (nonobstructive).
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