Which finding is most consistent with a sucking chest wound?

• A. A sucking sound on inhalation
• B. Clear lung sounds without signs
• C. No chest injuries
• D. No breathing trouble

Answer: (A)

Open chest wounds create an open pneumothorax, where air leaks into the chest through a defect in the chest wall. The most telling sign is an audible sucking or gasping sound heard with inhalation as air is drawn into the pleural space. This sound reflects the direct air leak from the atmosphere into the chest and indicates a significant chest injury that can impair ventilation on the affected side.

The other options don’t fit because they imply normal or unchanged lung status. Clear lung sounds without signs would not accompany a chest wound with air leakage. No chest injuries or no breathing trouble would contradict the presence of an open chest wall defect and the resulting air leak. In the field, this finding prompts immediate management with an occlusive dressing to seal the wound while allowing air to escape if needed, and close monitoring for signs of tension pneumothorax.