Which finding on chest assessment is most concerning in a trauma patient?

• A. Absent breath sounds with chest wall movement asymmetry
• B. Clear breath sounds bilaterally
• C. Normal chest expansion
• D. Symmetrical chest movement with loud breath sounds

Answer: (A)

In trauma, breathing assessment focuses on whether air is entering both lungs and whether chest movement is equal. The most concerning sign is when one side isn’t ventilating at all, indicated by absent breath sounds on that side combined with asymmetric chest movement. That pattern points to a potentially life‑threatening intrathoracic injury, such as a pneumothorax (possibly tension pneumothorax) or a large hemothorax, where air or blood has collapsed or compressed lung tissue and can rapidly impair oxygen delivery and venous return. This requires rapid recognition and immediate action per protocol.

By contrast, clear breath sounds on both sides, normal chest expansion, or symmetrical chest movement with loud breath sounds all suggest adequate ventilation and are far less alarming in the moment, signaling that both lungs are likely patent and air entry is present.