The nurse is reviewing a client's laboratory test results and notes a blood urea nitrogen (BUN) of 35 mg/dL and a creatinine of 1.0 mg/dL. What new order does the nurse anticipate?
a. Increase the client's IV fluids.
b. Prepare the client for dialysis.
c. Place the client on a fluid restriction.
d. Obtain urine for culture and sensitivity.
A
Normal BUN is 10 to 20 mg/dL. Normal creatinine is 0.6 to 1.2 mg/dL (males) or 0.5 to 1.1 mg/dL (females). Creatinine is more specific for kidney function than is BUN because BUN can be affected by several factors (dehydration, high-protein diet, and others). This client's creatinine is normal, which suggests a non-renal cause of the elevated BUN. A common cause of increased BUN is dehydration, so the nurse should anticipate giving the client more fluids.
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