The primary purpose of applying an occlusive dressing to a neck wound is to prevent what?

• A. Infection.
• B. Bleeding.
• C. Air entrainment and air embolism.
• D. Scarring.

Answer: (C)

Preventing air entrainment and air embolism is the critical reason for sealing a neck wound with an occlusive dressing. When the neck is open, inhalation creates a negative pressure that can pull air into torn neck veins or arteries. If air enters the vascular system, it can travel to the heart or brain and cause an air embolism, which can be life-threatening. The occlusive dressing forms a tight seal over the wound, blocking air from being drawn in as you breathe.

While wounds and dressings can influence infection risk and bleeding, the most dangerous consequence here is air entering the vessels. After applying direct pressure if needed to control bleeding, make sure the dressing is well sealed and monitor the patient for signs of embolism while arranging rapid transport and providing supportive care such as oxygen.