Originally Posted By: hikermor
The absolutely best thing would be a sterile gauze pad, but if the bleeding is severe and copious, anything will do. I generally EDC a cotton bandana which could be used for this purpose if the bleeding is really significant. Hopefully you will have a glove or some sort of blood barrier on your hand if you are dealing with a situation like this.

My first EMT instructor, a Navy medic, once rode along to the ER with an accident victim, clamping a major blood vessel in her neck all the way. This was in the days before gloves were in common use.

Use what you have. Gauze is the official thing - yes it absorbs, but by holding the blood it allows it to start clotting. Blood that flows doesn't clot ...

Combat gauze is the new and greatest in the military. Gauze impregnated with a hemostatic agent.

As to the 'how,' I use my hand and push really hard.