A client with acute renal failure is receiving continuous renal replacement therapy (CRRT). What is the primary advantage of CRRT compared to intermittent hemodialysis?

A. Incorrect. Fasting is not typically required before a renal biopsy.

B. Incorrect. The renal biopsy does not directly measure the glomerular filtration rate (GFR), which is usually assessed through blood tests.

C. Correct. A renal biopsy is a procedure in which a needle is inserted through the skin and into the kidneys to obtain a small tissue sample for examination. This allows for a direct assessment of kidney tissue and helps identify the cause of kidney dysfunction.

D. Incorrect. While a renal biopsy can provide information about the kidney's structure, its primary purpose is to obtain a tissue sample for histological examination, not to assess blood flow.

A. Incorrect. Constipation and abdominal pain are not typical manifestations of the fluid and electrolyte imbalance seen in acute renal failure.

B. Correct. Acute renal failure can lead to imbalances in electrolytes, particularly potassium and sodium. Muscle weakness and fatigue are common manifestations of these electrolyte imbalances.

C. Incorrect. Decreased heart rate and blood pressure are more commonly associated with fluid volume depletion in prerenal acute renal failure, rather than electrolyte imbalances.

D. Incorrect. Increased respiratory rate and depth are not typically associated with acute renal failure or its fluid and electrolyte imbalances.