Punctured Lung

I have never dealt with one where the actual lung had a cut in it. I have had a dog with the chest wall cut through between the ribs and you end up with a numothorax. The air preasure that is in the chest cavity excapes and it is very hard for the dog to breath (collapsed lung). They can fix this pretty quickly though. If the muscle is closed up and the cut is sealed after the muscle and skin have been stitched you can tap the chest cavity with a needle and tube and suck the air out of the cavity, usually several liters, and it allows the lung to work properly. The dog that I had get cut can still be hunted but has a lot less wind than she used to. Unless the chest is tapped the lung will continue to be collapsed and after time of not being able to inflate properly you typically numonia or some other issues and even death as a result of a lung that is left collapsed.