This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
A ventilator pressure relief valve stuck in closed position can result in 
Select and explain. 
A. Barotrauma, B. Hypoventilation, C. Hypoxia, D. Hyperventilation
A: Barotrauma
Answer: A: Barotrauma 
Explanation: A ventilator pressure relief valve stuck in closed position can generate excessively high pressure in the patient's lung,resulting in barotrauma.Barotrauma and volutrauma overdistend and distrupt lung tissue;may be clinically manifest by interstitial emphysema,or pneumothorax;and can result in the liberation of cytokines from over distended tissues,fuher promoting tissue injury. Reference:Harrison's Medicine