A victim with a penetrating chest wound should be promptly provided with first aid and subsequent qualified medical care, as his condition will worsen over time. The damaged lung or lungs cannot function normally, breathing becomes difficult and internal bleeding increases. After calling an ambulance, follow the following procedure for providing first aid for a penetrating chest injury: 1. Ask the victim to deepen eye exhale. 2. Cover the wound with a bandage that will not leak blows air, for example, you can use wrapped in a piece of plastic bag or plastic wrap. If this is not the case at hand, take a piece of cloth or something some clothes. 3. Secure the bandage with adhesive tape, stitching one edge open. After this, air will not flow into Well, when you inhale, but it will be able to come out when you- breathing. 4. In case of a gunshot wound, be sure to check the place where the bullet might exit. If you find a second hole, please provide help as described above.