Ati Pn Pharmacology 2020 Proctored Exam 2
Calculation
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.)
mL
Explanation & Rationale
To answer this question, the nurse needs to perform the following steps: Convert the child's weight from pounds to kilograms by dividing 44 by 2.2. The result is 20 kg. Calculate the total daily dose of gentamicin by multiplying 6 mg/kg by 20 kg. The result is 120 mg/day. Divide the total daily dose by three to get the dose for each administration. The result is 40 mg/dose. Calculate the volume of gentamicin to be administered by dividing 40 mg by 40 mg/mL. The result is 1 mL/dose. Therefore, the nurse should administer 1 mL of gentamicin with each dose.
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