A client with a history of chronic renal failure receives hemodialysis treatments three times per week through an arteriovenous (AV) fistula in the left arm. Which intervention should the nurse include in the care plan?

A. Wrapping the AV fistula in gauze is not necessary unless there's a dressing for a new fistula or bleeding — routine wrapping is not recommended. B. Taking blood pressure in the arm with an AV fistula is contraindicated because it can damage the fistula. C. Assessing for a bruit (with a stethoscope) and a thrill (by palpation) is essential to confirm that the AV fistula is functioning properly for dialysis. D. While keeping the area clean is important, keeping it dry is not a specific routine requirement unless directed due to a wound or infection.