A nurse is caring for a client who is taking azathioprine to treat rheumatoid arthritis. Which of the following laboratory values indicates an adverse effect of this medication?
BUN 15 mg/dL
WBC 3,000/mm²
Het 45W
Platelets 250.000/mm²
The Correct Answer is B
A. BUN 15 mg/dL (Blood Urea Nitrogen):
BUN is a measure of kidney function, and an elevated BUN may suggest impaired kidney function. However, it is not a specific marker for azathioprine adverse effects.
B. WBC 3,000/mm² (White Blood Cell count):
This is the correct answer. Azathioprine can suppress bone marrow function, leading to leukopenia (low white blood cell count). A WBC count of 3,000/mm² indicates a lower-than-normal white blood cell count, which can increase the risk of infection.
C. Hct 45% (Hematocrit):
Hematocrit measures the percentage of red blood cells in the blood. While it can be affected by various factors, it is not a specific marker for azathioprine adverse effects.
D. Platelets 250,000/mm²:
Platelets are involved in blood clotting, and a platelet count of 250,000/mm² is within the normal range. Azathioprine is not typically associated with adverse effects on platelet counts.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["60"]
Explanation
1.Convert the available lidocaine concentration to mg/mL:
2 g of lidocaine = 2000 mg
2000 mg ÷ 500 mL = 4 mg/mL
2. Determine the mL/min required to deliver 4 mg/min:
4 mg/min ÷ 4 mg/mL = 1 mL/min
3. Convert mL/min to mL/hr:
1 mL/min × 60 minutes = 60 mL/hr
Correct Answer is C
Explanation
A. Hypomagnesemia: While exercise can cause some magnesium loss through sweat, lithium is not specifically associated with magnesium imbalance. The primary concern in this scenario is related to sodium levels due to the impact of both exercise and lithium.
B. Hypokalemia: Exercise might also lead to potassium loss through sweat. However, potassium levels are not specifically affected by lithium in the same way as sodium levels. Hyponatremia is a more significant concern in this context.
C. Hyponatremia: Exercise-induced sodium loss compounded with lithium's potential to disrupt sodium balance increases the risk of hyponatremia. It's essential to monitor sodium levels in individuals on lithium who start new exercise programs.
D. Hypocalcemia: Exercise itself doesn't directly lead to significant calcium imbalances. Additionally, lithium is not associated with disturbances in calcium levels to the extent that it is with sodium levels.
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