Which finding is most associated with a tension pneumothorax?

Which finding is most associated with a tension pneumothorax?

• A. Absent lung sounds on the affected side
• B. Hyperactive bowel sounds
• C. Bilateral crackles
• D. Normal jugular venous pressure

Answer: (A)

In a tension pneumothorax, air builds up under pressure in the pleural space and collapses the lung on the affected side, so you lose breath sounds there. That absence or marked decrease in lung sounds on the involved side is the most telling sign among the options. Other possibilities don’t fit this chest-presentation pattern: hyperactive bowel sounds are a GI sign, bilateral crackles suggest fluid or edema in both lungs, and normal jugular venous pressure doesn’t align with the typical elevated venous pressure seen when mediastinal structures are compressed. So, the missing breath sounds on the affected side best reflect the lung collapse caused by the tension pneumothorax and point to the need for rapid intervention.

In a tension pneumothorax, air builds up under pressure in the pleural space and collapses the lung on the affected side, so you lose breath sounds there. That absence or marked decrease in lung sounds on the involved side is the most telling sign among the options. Other possibilities don’t fit this chest-presentation pattern: hyperactive bowel sounds are a GI sign, bilateral crackles suggest fluid or edema in both lungs, and normal jugular venous pressure doesn’t align with the typical elevated venous pressure seen when mediastinal structures are compressed. So, the missing breath sounds on the affected side best reflect the lung collapse caused by the tension pneumothorax and point to the need for rapid intervention.