What should a nurse assess after noting moisture under the dressing covering a catheter insertion site?

After observing moisture under the dressing covering a catheter insertion site, it is crucial to assess the tightness of the tubing connections. This step is vital in ensuring that there are no leaks occurring from any of the connections, which can contribute to excess moisture and increase the risk of infection at the insertion site.

Ensuring that the connections are secure may help eliminate the source of the moisture. If fluid is leaking from a loose connection, it can compromise the integrity of the dressing, potentially leading to contamination and other complications.

Other options, while they may seem relevant, do not directly address the immediate concern of addressing moisture under the dressing. Assessing the amount of fluid in the bag, checking the client’s vital signs, or evaluating the presence of drainage bags does not specifically focus on the catheter's integrity and the potential risk associated with fluid leakage. Therefore, tightening the connections should be prioritized to maintain the safety and effectiveness of intravenous therapy.