CRNE Exam Prep

Category - Changes in Health

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A client who had open heart surgery 24 hours ago has had a urine output of about 20 ml/hr for the past 12 hours. The laboratory findings reveal a BUN level of 38 mg/dl and a serum creatinine level of 2.0 mg/dl. A nurse reviewing these results determines that the client is at risk for which of the following?

Acute renal failure
Glomerulonephritis
Pyelonephritis
Uremic syndrome

Explanation

Answer: A - Based on the laboratory findings, the client is at increased risk for acute renal failure. Cardiac surgery can result in poor kidney perfusion, breakdown of red blood cells, and low cardiac output, consequently increasing the risk for renal failure.

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