What is the purpose of applying ice during first aid?

Applying ice during first aid serves the primary purpose of reducing swelling and inflammation. When an injury occurs, the body responds with a cascade of inflammatory processes, which can lead to swelling and increased pain. The application of ice helps to constrict blood vessels, which reduces blood flow to the injured area. This vasoconstriction minimizes the amount of inflammatory substances that reach the site, subsequently decreasing swelling and bruising.

Additionally, the cold temperature can alleviate pain through numbing effects, supporting the rationale behind its use. However, the main benefit remains its ability to manage inflammation, making it a crucial component in the initial treatment of injuries such as sprains, strains, and other soft tissue injuries. By controlling swelling and inflammation, recovery can be expedited and further complications prevented.