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30 July, 21:59

Atelectasis is caused by occupational exposure to coal dust.

a. true

b. false

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Answers (1)
  1. 31 July, 00:04
    0
    The statement is true. Atelectasis is the collapse or closure of a lung resulting in reduced or absent gas exchange. It may effect part or all of a lung. An airway blockage also can cause Atelectasis. A blockage may be due to a foreign object, a mucus plug, lung cancer, or a poorly placed breathing tube from a ventilator. When a blockage occurs, the air that's already in the air sacs is absorbed into the bloodstream.
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