Oregon Certified Nursing Assistant State Practice Exam

How can cold applications benefit a person?

1. Cold prevents swelling and reduces pain

2. Cold increases temperature in the body tissues

3. Cold increases the blood flow

4. Cold soothes; it has no medical benefits

The correct answer is: Cold prevents swelling and reduces pain

Cold applications can benefit a person primarily by preventing swelling and reducing pain. When applied to an injured area, cold therapy constricts blood vessels, which helps decrease blood flow to the area, thereby minimizing swelling and inflammation. This reduction in blood flow can also help numb the area, leading to a decrease in pain sensations. In contrast, increasing the temperature in body tissues or increasing blood flow would not be typical benefits of cold applications; instead, these actions are associated with heat therapy. While some may perceive that cold could soothe discomfort, it is essential to recognize that cold applications have specific medical benefits, particularly for acute injuries or inflammatory conditions.