Which of the following are common signs of a surgical site infection (SSI)?

The presence of warmth and swelling at the surgical site is a common sign of a surgical site infection (SSI). These symptoms occur due to the body’s response to infection, where increased blood flow and immune activity can lead to localized inflammation.

When the body detects an infection, it sends more blood to the area, which raises the temperature and causes swelling as fluid and white blood cells accumulate to fight the infection. Recognizing these signs early is crucial in postoperative care, as prompt intervention can help prevent further complications related to SSIs.

In contrast, increased appetite, excessive urination, and low blood pressure are not typically associated with SSIs. Increased appetite is often a sign of recovery or healing, while excessive urination could suggest issues unrelated to surgical infections, such as metabolic disturbances or fluid overload. Low blood pressure is concerning but can arise from various factors, including hemorrhage or dehydration, and does not specifically indicate an infection at the surgical site.