Internal bleeding is when you lose blood inside your body. You’ll most likely be taken to the ER. You’ll get fluids injected to keep your blood pressure from falling dangerously low. An ultrasound, a CT scan, or both can show if you’re bleeding inside. Depending on your condition, your doctors may decide to take you to surgery, or watch and wait. Sometimes, internal bleeding from trauma stops on its own. If you’re seriously injured, doctors may operate on your within minutes after you get to the hospital.
you have to manually seal off the vessel with stitches, using electrical current to generate heat which seals off blood vessels, or using a topical agent or just stop blood flow to the area that is suffering from internal bleeding.