Respiratory disorders · Physiology

A pneumothorax causes respiratory distress mainly by:

  1. Reducing airway diameter
  2. Increasing pulmonary blood flow
  3. Collapsing the lung
  4. Increasing alveolar surface area
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Correct answer: Collapsing the lung

Air in the pleural space causes lung collapse. This reduces effective ventilation.

Difficulty: Medium Question 9 of 20

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