What method should NOT be used to manage severe external bleeding?

The use of a cold pack application is not recommended for managing severe external bleeding. In cases of significant bleeding, the primary goal is to control the blood flow to prevent excessive blood loss and stabilize the patient. Cold packs may reduce blood flow in minor injuries by constricting blood vessels; however, they are not effective for severe bleeding, where direct pressure, elevation, and tourniquet application are more appropriate methods.

Direct pressure helps to stop the bleeding by applying pressure on the wound, thereby promoting clot formation. Elevation of the limb can assist in reducing blood flow to the injury site, further helping to minimize bleeding. When these methods are not effective, or in the case of a life-threatening hemorrhage, the application of a tourniquet is an acceptable and often necessary intervention.