How to Treat a Sucking Chest Wound
https://www.artofmanliness.com/articles/how-to-treat-a-sucking-chest-wound/
Everything about this potentially life-threatening injury is quite bad. A sucking chest wound occurs when the chest cavity is punctured by some foreign object. Bullets and bits of shrapnel are common culprits.
Your lungs consist of delicate sacs that fill with air when you inhale. Your chest cavity, including your ribs, protects your lungs and maintains an open space for them to expand into. When something pierces your chest cavity, outside air can flood in and cause your lung to collapse. A collapsed lung will leave you gasping, or sucking, for air as your lung tries to fight against the increased pressure coming in through the wound. That pressure only builds as you try to breathe harder.
Sucking chest wounds typically cause ... ---CONTINUED at LINK, above---