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atelectasis
(redirected from round atelectasis)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.

atelectasis

 or lung collapse

Lack of expansion of pulmonary alveoli (see pulmonary alveolus). With a large-enough collapsed area, the victim stops breathing. In adhesive atelectasis, obstruction or lack of surface tension keeps a newborn's alveoli from expanding. Compression atelectasis is caused by external pressure. Obstructive atelectasis may be caused by blockage of a major airway or when pain from abdominal surgery keeps breathing too shallow to clear bronchial secretions; treatment involves removal of obstruction or fluids, control of infection, and lung reinflation.


atelectasis [‚ad·əl′ek·stə·səs]
(medicine)
Total or partial collapsed state of the lung.
Failure of the lung to expand at birth.


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