How should an open chest wound be managed in the field?

• A. Cover with a vented chest seal to prevent air entry while allowing air escape.
• B. Seal completely with an occlusive dressing.
• C. Leave it open to the air.
• D. Insert a chest tube immediately.

Answer: (A)

The key idea is preventing air from being sucked into the chest while still allowing trapped air to escape. An open chest wound can act like a hole in the chest where air is drawn into the pleural space with each breath, risking lung collapse and, if pressure builds, a tension pneumothorax. A vented chest seal covers the wound and provides a one-way pathway: it blocks air from entering the wound during inhalation but lets air escape if pressure starts to rise. This stabilizes breathing and reduces the danger of a developing tension pneumothorax while you arrange for definitive care.

Sealing completely with an occlusive dressing traps air inside and can create or worsen a tension pneumothorax. Leaving the wound open to the air offers no barrier to air entry and does not prevent ongoing injury. Inserting a chest tube is a treatment handled in a medical setting and requires proper equipment and sterile technique, which isn’t typically available in the field.