Which physiological change is expected from the application of cold therapy?

The application of cold therapy leads to vasoconstriction, which is the narrowing of blood vessels. When cold is applied to a tissue, it causes the smooth muscle in the walls of the blood vessels to contract. This physiological response minimizes blood flow to the area, which can help reduce inflammation and swelling. Vasoconstriction is a natural response to the cold as the body tries to conserve heat and maintain its core temperature.

Understanding the effects of cold therapy is crucial in wound care, as it aids in reducing pain and limiting tissue damage after an injury. This is particularly important in acute injuries, where controlling swelling can promote faster healing and mitigate the risk of further complications.