What is the purpose of using a pressure bandage?

Using a pressure bandage is primarily aimed at controlling severe bleeding and immobilizing a wound. When applied correctly, the pressure exerted by the bandage helps to constrict blood vessels, thereby slowing down or stopping the flow of blood from the injury site. This is crucial in emergency situations where excessive bleeding can lead to shock or life-threatening conditions.

Additionally, the immobilization aspect ensures that the wounded area is stabilized, which prevents further injury or exacerbation of the wound. This combination of controlling bleeding and providing stability is vital in wilderness first aid settings where immediate medical assistance may not be readily available. The other choices, while important in the context of overall wound care and management, do not capture the primary function of a pressure bandage as comprehensively as this choice.