Which sign may indicate infection at the insertion site of a CVAD?

A gradual increase in the patient's oral temperature is indeed a significant indicator of infection, as it may reflect a systemic response to an infectious process. When a central venous access device (CVAD) is in place, it can serve as a potential portal for bacteria to enter the bloodstream or the local tissue at the insertion site. An increase in temperature is a common physiological response when the body is fighting an infection, signaling that the immune system is activated.

While each of the other signs can also indicate complications associated with a CVAD, they may not be as specific or indicative of an infection. For example, swelling around the site can result from various issues, including inflammation or irritation, which may not necessarily indicate an infection. Similarly, redness at the site may indicate irritation or local inflammation, but it is not definitive on its own without other signs. Pain during movement can suggest local issues related to the insertion site, but again, it does not specifically indicate an infection. Understanding the role of fever as a systemic indicator of infection can help in monitoring patients with CVADs effectively.