What is a common sign of infection that a CNA might observe?

A common sign of infection that a Certified Nursing Assistant (CNA) might observe is redness, swelling, and increased warmth around a wound. These symptoms indicate the body’s inflammatory response to an infection. When an area becomes infected, the immune system responds, causing blood vessels to dilate and increasing blood flow to the affected area. This results in visible redness and warmth. Swelling occurs due to the accumulation of fluids and immune cells that migrate to the site to fight off the infection. These signs are critical for a CNA to recognize since they can help prompt appropriate medical attention and treatment.

The other options do not represent signs of infection. The absence of redness and swelling suggests that there might not be an infection present, while a lack of pain could indicate that a wound is healing properly or not infected. Improvement in the wound condition typically signifies healing, not infection. A solid understanding of these signs is essential for effective patient care and ensuring timely intervention when infections occur.