A nurse is reviewing provider prescriptions for a client who has reduced kidney function. Which of the following prescribed diagnostics should the nurse question?

A. Magnetic resonance imaging (MRI) of the abdomen: An MRI is a safe diagnostic procedure for clients with reduced kidney function, as it does not involve the use of nephrotoxic contrast material. This is typically safe for clients with kidney issues. B. Kidney, ureter, bladder (KUB) radiograph: A KUB radiograph is a simple X-ray of the abdomen and does not involve contrast. It is safe for clients with reduced kidney function and can be used to assess the kidneys and urinary system. C. Renal ultrasound: A renal ultrasound is a non-invasive imaging procedure that uses sound waves to assess kidney structure and function. It does not require contrast and is safe for clients with reduced kidney function. D. CT scan with contrast: Contrast material can be nephrotoxic, especially in clients with reduced kidney function. This can lead to contrast-induced nephropathy, which should be avoided or carefully managed in patients with kidney impairment.