An open chest injury exposes the chest cavity to pressure from the outside air. When that air enters the cavity on inhalation the pressure balance inside the cavity is thrown off which causes the lung on the injured side to collapse.
The chest seal occludes or stops air from the outside from being sucked into the chest cavity on inhalation. A vented chest seal also allows for any excess air in the chest cavity the ability to vent out and help stop the development of Tension Pneumothorax. While the goal is to stop the lung from collapsing in the first place, the injured lung can re-inflate once a chest seal is applied and the chest cavity pressure normalizes.
The AZ Chest Seal is specifically engineered to meet these critical needs and uses hydrogel and therefore stays in place, even in difficult conditions.
How to Apply a Chest Seal
1. Clean and dry the area around the wound as much as possible before applying the chest seal.
2. Take gauze and wipe away any blood, sweat, debris from the wound area.
3. Place the chest seal next to the wound. Slowly remove the plastic backing while rolling the sticky side over the wound.
4. Press dressing firmly to skin to assure an occlusive seal.
5. Make sure that the vent ports are not clogged up and are able to let excess air vent from the chest cavity.
6. Repeat as necessary for additional wounds, ensure you sea any exit wound.