A few weeks ago in class (EMT), we were discussing tourniquet application in instances where there is bleeding that couldn't be controlled by pressure. In most cases, a tourniquet will be used on a limb that has arterial bleeding as opposed to venous. And in the case of arterial bleeding, the tourniquet will be applied proximal (above) to the injury.
However, I began to wonder if one had to use a tourniquet to control a venous bleed where the tourniquet would be applied. Since venous blood is flowing back to the heart, couldn't the tourniquet be applied distal to the injury?
Edit: Theoretically, this is an injury in which only a vein has been injured but the bleeding cannot be stopped through traditional methods.