A nurse is preparing to perform a diagnostic test to assess kidney function in a client with suspected acute renal failure. Which test will provide information about the glomerular filtration rate (GFR)?

A. Incorrect. Elevated blood pressure is not typically an initial assessment finding in acute renal failure. In fact, it is more common to see low blood pressure (hypotension) due to decreased blood flow to the kidneys.

B. Correct. One of the hallmark manifestations of acute renal failure is decreased urine output (oliguriA. or even no urine output (anuriA. . This is often accompanied by low blood pressure as a result of decreased kidney function.

C. Incorrect. Acute renal failure usually leads to changes in blood pressure and urine output. Stable blood pressure and urine output are not typical initial assessment findings in this condition.

D. Incorrect. High blood sugar levels and frequent urination are not directly related to acute renal failure. These symptoms are more characteristic of diabetes mellitus.

A. Incorrect. Unlike computed tomography (CT) scans, MRI scans do not typically require the ingestion of a contrast solution.

B. Incorrect. The MRI scan does not directly measure the glomerular filtration rate (GFR), which is typically assessed through blood tests.

C. Incorrect. A renal biopsy involves inserting a needle through the back to obtain a tissue sample from the kidneys, not an MRI scan.

D. Correct. Before an MRI scan, clients need to remove all metal objects and devices, including jewelry, piercings, hearing aids, and certain medical implants. Metal can interfere with the MRI's magnetic field and cause safety concerns during the procedure.