A nurse is caring for a school-age child who is receiving a continuous IV infusion through the right antecubital vein. Which of the following findings should the nurse recognize as a complication of IV therapy?

A. Capillary refill less than 2 seconds: Normal capillary refill indicates adequate peripheral perfusion. This finding does not suggest a complication of IV therapy and reflects proper circulation in the extremity. B. Bilateral brachial pulses +3: Strong, equal pulses in both arms indicate normal arterial blood flow. This is not indicative of IV complications and shows the limb is well perfused. C. Blood return from IV site catheter: Blood return from the IV catheter confirms proper placement within the vein. This is an expected finding and does not signal a complication. D. Dark streak at the vein of the insertion site: A dark streak along the vein suggests infiltration, phlebitis, or early thrombophlebitis. This indicates a complication of IV therapy and requires immediate assessment, site removal or rotation, and appropriate interventions to prevent further tissue damage.