(PHARM) The nurse instructs a person taking phenytoin (Dilantin) that periodic blood tests will be necessary. The nurse explains that the laboratory checks will monitor for which potential medication-induced change?
Increasing creatinine
Liver damage
Potassium depletion
Increasing sedimentation rates
The Correct Answer is B
A. While creatinine levels are important for kidney function, phenytoin is more commonly associated with hepatic (liver) effects than renal toxicity.
B. Phenytoin is metabolized in the liver and can cause hepatotoxicity. Periodic liver function tests are essential to monitor for potential liver damage.
C. Potassium depletion is not typically associated with phenytoin use. It is more commonly a concern with diuretics or other medications affecting electrolytes.
D. Sedimentation rate is a non-specific marker of inflammation and is not used to monitor phenytoin therapy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["447.2"]
Explanation
-
Order:Zithromax 500 mg orally, daily
Child’s Weight:82 pounds
Safe Dose Range:10–12 mg/kg/day
Available Form:250 mg tablets
Question:What is the daily safe dose range for this child? - Convert weight to kilograms:
82 lb ÷ 2.2 = 37.3 kg(rounded to 1 decimal place) - Calculate safe dose range:
Minimum:372.7 mg/day
Maximum:447.2 mg/day
Final Answer:Safe dose range: 372.7 mg to 447.2 mg per day
Minimum dose:10 mg × 37.3 kg = 373.0 mg/day
Maximum dose:12 mg × 37.3 kg = 447.6 mg/day
Round to tenths as instructed:
Correct Answer is ["38.3"]
Explanation
Use the conversion formula:
°C = (°F − 32) × 5⁄9
Substitute the values:
°C = (100.9 − 32) × 5⁄9
°C = 68.9 × 5⁄9
°C = 344.5 ÷ 9
°C ≈ 38.28
Rounded to one decimal place: 38.3°C
Final Answer:38.3 C
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