Final answer:
The nurse would note enlarged, hardened veins as a sign of superficial venous thrombosis.
Step-by-step explanation:
If superficial venous thrombosis were present, the nurse would note enlarged, hardened veins as a sign. Superficial venous thrombosis occurs when there is a blood clot in the superficial veins near the surface of the skin. This can cause the veins to become enlarged and hardened, making them visible and palpable.