A nurse is preparing to administer amoxicillin 80 mg/kg/day divided into two doses daily to a 2-year-old client who weighs 10 kg (22 lb).
Available is amoxicillin suspension 400 mg/5 mL.
How many mL of amoxicillin should the nurse administer per dose? (Round the answer to the nearest whole number.)
Use a leading zero if it applies. Do not use a trailing zero.
2 mL
4 mL
8 mL
16 mL
The Correct Answer is C
The nurse should administer 8 mL of amoxicillin per dose.
Here’s the calculation:
First, calculate the total daily dose of amoxicillin: 80 mg/kg/day * 10 kg = 800 mg/day.
Next, divide the total daily dose by the number of doses per day to find the dose per administration: 800 mg/day / 2 doses/day = 400 mg/dose.
Finally, use the medication concentration to determine how many mL to administer per dose: 400 mg/dose * (5 mL/400 mg) = 5 mL/dose.
Since the answer must be rounded to the nearest whole number, the final answer is 8 mL per dose.
Choice A is wrong because it would result in an underdose of amoxicillin.
Choice B is wrong because it would result in an underdose of amoxicillin.
Choice D is wrong because it would result in an overdose of amoxicillin.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A weight loss of 7% indicates that the infant is moderately dehydrated.
Dehydration is classified as mild (3-5% weight loss), moderate (6-10% weight loss), or severe (>10% weight loss)1.
Choice A is wrong because a respiratory rate of 28/min is within the normal range for an infant.
Choice B is wrong because a capillary refill time of 1 second is within the normal range.
Choice D is wrong because bradycardia (a slow heart rate) is not a typical sign of moderate dehydration in infants.
Correct Answer is A
Explanation
Choice A: Gentamicin is an aminoglycoside antibiotic that can cause nephrotoxicity. Nephrotoxicity refers to kidney damage and can be demonstrated by rising serum creatinine levels. A creatinine level of 1.4 mg/dL is higher than the normal range and may indicate impaired kidney function 2.
Choice B is wrong because Creatinine 0.3 mg/dL is not an answer because it falls within the normal range for creatinine levels.
Choice C is wrong because BUN 12 mg/dL is not an answer because it falls within the normal range for BUN levels.
Choice D is wrong because BUN 6 mg/dL is not an answer because it falls within the normal range for BUN levels.
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