ATI LPN
ATI PN Pharmacology 2020 Questions
Extract:
Question 1 of 5
A nurse is preparing to administer gentamicin to a child who weighs 44 lb. The provider prescribes 6 mg/kg/day IV to be administered in three equal doses. Available is gentamicin 40 mg/mL. How many mL should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: A
Rationale:
To calculate the dosage, first, convert the child's weight to kg: 44 lb / 2.2 = 20 kg. Next, calculate the total daily dose: 6 mg/kg/day * 20 kg = 120 mg/day. Since the dose is to be divided into three equal doses, each dose would be 120 mg / 3 = 40 mg. Since gentamicin is available as 40 mg/mL, the nurse should administer 1 mL for each dose (40 mg / 40 mg/mL = 1 mL).
Therefore, the correct answer is A: 1 mL.
Choices B-G are incorrect as they do not align with the calculated dose based on the child's weight and the available concentration of the medication.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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