Question

A patient arrives in the ER following a road traffic accident with hypotension, respiratory distress and subcutaneous emphysema with no entry of air on one side. What will be the best management?

• A. Needle decompression in the 5th intercostal space in the midaxillary line
• B. Continue positive pressure ventilation
• C. Shift to ICU and intubate
• D. Secure IV line and start fluid resuscitation after insertion of a wide-bore IV line

Hint:

Air is trapped under pressure; let it out before anything else.

Answer 1

The Correct Option is A

Diagnosis: Hypotension, respiratory distress, surgical emphysema and absent air entry on one side after trauma describe a tension pneumothorax. This is a clinical emergency; do not wait for a chest X-ray.

Why option A: Tension pneumothorax is treated by immediate needle decompression to convert it to a simple (open) pneumothorax, followed by a chest tube. Of all the options, only A is an actual decompression, so it is the life-saving step. Current ATLS guidance accepts the 5th intercostal space in the anterior or mid-axillary line as a valid decompression site (the older teaching was the 2nd intercostal space, midclavicular line).

Why the others are wrong: Continuing positive pressure ventilation (B) forces more air into the pleural space and worsens the tension. Shifting to ICU and intubating (C) wastes time on a patient who is about to arrest. Fluids alone (D) do not relieve the trapped air, which is the cause of the obstructive shock.

Mechanism: A one-way valve leak lets air enter the pleura but not escape, collapsing the lung, shifting the mediastinum and kinking the great veins, dropping venous return and blood pressure.

Ref: Bailey and Love, Short Practice of Surgery, 27e, Pg 367, 920.