Applying an occlusive dressing is first aid for which type of injury?

• A. Open Chest wound
• B. Minor cut
• C. Sprain
• D. Closed fracture

Answer: (A)

Occlusive dressing is used for an open chest wound. The nonporous cover seals the wound, preventing air from being sucked into the chest cavity as the person breathes. If air can enter the chest, a punctured lung can collapse further or lead to a dangerous tension pneumothorax. By sealing the wound, you reduce that risk while still allowing any trapped air to escape if the dressing is secured on three sides. This approach isn’t needed for a minor cut, a sprain, or a closed fracture, since none of those injuries involve an opening into the chest cavity where air entry would cause serious trouble.