A client is prescribed an IV infusion of 0.9% Sodium Chloride at 125 mL/hr. The nurse notes swelling, coolness, and pain at the insertion site. Which action should the nurse take first?

The correct answer to the question "A client is prescribed an IV infusion of 0.9% Sodium Chloride at 125 mL/hr. The nurse notes swelling, coolness, and pain at the insertion site. Which action should the nurse take first?" is Option C: Discontinue the infusion and remove the catheter..

The other options — A) Apply a warm compress to the site., B) Elevate the affected extremity., D) Document the findings and monitor the site closely. — are incorrect for this NCLEX-RN Exam Prep question. As explained above: The signs (swelling, coolness, pain) indicate IV infiltration, where fluid leaks into surrounding tissue. The priority is to stop the infusion and remove the catheter to prevent further tissue damage.