ATI LPN
PN Pharmacology 2023 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: 1 mL
Rationale: The correct answer is 1 mL.
To calculate the dose for each administration, first convert the child's weight from pounds to kilograms (44 lb = 20 kg). The total daily dose is 6 mg/kg/day, so for a 20 kg child, the total daily dose is 120 mg (6 mg/kg/day x 20 kg). Since it is to be given in three equal doses, each dose would be 40 mg (120 mg total dose ÷ 3 doses). Since the available concentration is 40 mg/mL, the nurse would administer 1 mL for each dose (40 mg ÷ 40 mg/mL = 1 mL).
Therefore, the correct answer is 1 mL.
Incorrect answers:
-
Choice B: This is incorrect as it does not follow the correct calculation method.
-
Choice C: This is incorrect as it does not consider the weight of the child and the total daily dose required.
-
Choice D: This is incorrect as it does not
Question 2 of 5
Correct Answer:
Rationale:
Question 3 of 5
Correct Answer:
Rationale:
Question 4 of 5
Correct Answer:
Rationale:
Question 5 of 5
Correct Answer:
Rationale: