A nurse is reviewing the diagnostic test results of an older adult female client who is preoperative for a knee arthroplasty. The nurse should notify the surgeon of which of the following results?

Hematocrit 40%

Creatinine 0.9 mg/dL

WBC count 20,000/mm3

Potassium 3.8 mEq/L

Answer and Explanation

The Correct Answer is C

A.   A hematocrit of 40% is within the normal range for females, which is typically around 37-47%. This result is not concerning and does not typically require immediate notification to the surgeon.
B.   A creatinine level of 0.9 mg/dL is within the normal range for adults (normal range varies slightly among laboratories but is generally around 0.5-1.1 mg/dL). This result indicates normal kidney function and does not require immediate notification.
C.   A white blood cell (WBC) count of 20,000/mm3 is elevated above the normal range, which is typically between 4,500-11,000/mm3. An elevated WBC count could indicate infection or inflammation. Given the client is preoperative, an elevated WBC count may suggest an underlying infection that needs to be addressed before proceeding with surgery. The nurse should notify the surgeon promptly so appropriate evaluation and management can be initiated.
D.   A potassium level of 3.8 mEq/L is within the normal range (normal range is generally 3.5-5.0 mEq/L). This result is not concerning and does not require immediate notification to the surgeon.

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Correct Answer is B

Explanation

A. Canola oil is a healthier option compared to oils high in saturated fats, such as butter or lard. It does not significantly contribute to dietary cholesterol intake. Therefore, this statement does not indicate a need for follow-up teaching on a low-cholesterol diet.
B. Eggs are high in dietary cholesterol, and consuming two eggs daily can significantly increase cholesterol intake. For someone with elevated cholesterol levels or a history of atherosclerosis, this dietary habit may contribute to further elevation of cholesterol levels and potentially worsen cardiovascular health. Hence, this statement indicates the need for follow-up teaching on reducing dietary cholesterol intake.
C. Lemon juice is a low-calorie and low-cholesterol flavoring option. It does not significantly impact cholesterol intake. Therefore, this statement does not indicate a need for follow-up teaching on a low- cholesterol diet.
D. Omega-3 fatty acids are beneficial for heart health and do not contribute to dietary cholesterol intake. In fact, they may help reduce triglyceride levels and inflammation. Therefore, this statement does not indicate a need for follow-up teaching on a low-cholesterol diet.

A. Hypophosphatemia B. Hypernatremia C. Hypercalcemia D. Hyperkalemia

Correct Answer is D

Explanation

A. Hypophosphatemia refers to low levels of phosphate in the blood. In prerenal AKI, phosphate levels are typically normal or even elevated due to reduced kidney function and impaired phosphate excretion. Therefore, hypophosphatemia is not expected in prerenal AKI.
B. Hypernatremia refers to high levels of sodium in the blood. In prerenal AKI, sodium levels can be elevated due to reduced kidney function and impaired ability to excrete sodium. This occurs because the kidneys play a crucial role in regulating sodium balance. Therefore, hypernatremia is a possible electrolyte imbalance in prerenal AKI.
C. Hypercalcemia refers to high levels of calcium in the blood. In prerenal AKI, calcium levels are usually normal or decreased due to various factors, including reduced renal excretion of calcium. Therefore, hypercalcemia is not typically seen in prerenal AKI.
D. Hyperkalemia refers to high levels of potassium in the blood. In prerenal AKI, hyperkalemia is a common electrolyte imbalance. Normally, the kidneys play a critical role in potassium excretion. Reduced kidney function in prerenal AKI can lead to impaired potassium excretion, resulting in elevated potassium levels in the blood.

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A nurse is reviewing the diagnostic test results of an older adult female client who is preoperative for a knee arthroplasty. The nurse should notify the surgeon of which of the following results?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is B

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Correct Answer is D

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