Which finding is most consistent with a chest injury causing decreased breath sounds on one side?

• A. Diminished or absent breath sounds on the affected side.
• B. Low blood pressure with unilateral leg swelling
• C. JVD distension on both sides
• D. Clear lung sounds with chest pain

Answer: (A)

Unilateral chest trauma that produces decreased breath sounds on one side points to impaired ventilation of that lung, most commonly from a pneumothorax or hemothorax where air or blood accumulates in the pleural space and the lung on that side collapses. This is why diminished or absent breath sounds on the affected side is the most consistent finding in this scenario. The other options describe problems not specifically tied to one-sided lung ventilation: systemic issues like shock with leg swelling, bilateral venous congestion, or chest pain with clear lung sounds don’t explain unilateral loss of breath sounds.