CRNE Exam Prep

Category - Changes in Health

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A nurse reviews the serum laboratory tests of a male client scheduled for cholecystectomy. Which of the following laboratory results should alert the nurse, as it can be a reason to postpone the surgery?

BUN = 20 mg/dL
Hematocrit = 30%
Platelets = 200,000 cells/µL
Potassium = 4.0 mEq/L

Explanation

Answer: B - The routine screening tests before surgery include a complete blood count, coagulation studies, serum electrolyte tests, and serum creatine. The results are within the normal range except for hematocrit, which has a normal range of 42 to 52% for males.

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