ATI Dosages by Weight – Dosage Calculation 3.0 Dosage by Weight Test, Nursing Practice Questions, Study Guide & Exam Review

ATI Dosages by Weight Dosage Calculation 3.0 Dosage
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ATI Dosages by Weight Dosage
Calculation 3.0 Dosage by Weight Test

A nurse is preparing to administer epoetin alfa 50 units/kg subcutaneous toa preschooler who weighs 40
lb. Available is epoetin alfa 2,000 units/ml. How many ml should the nurse administer?

(Round to the nearest whole number. Use a leading 0 if it applies. Don't use a trailing zero.) - correct
answer 2.2 lb/kg = 40 lb -> 18.181818 kg



50 units/kg x 18.181818 kg = 909.090909 units



2,000 units/ml = 909.090909 units -> 0.454545ml



ANS: 0.45 ml



A nurse is preparing to administer phenytoin 5 mg/kg/day PO divided equally every 12 hr for an infant
who weighs 12 lb 4 oz. How many mg should the nurse administer per dose?

(Round to the nearest whole number. Use a leading 0 if it applies. Don't use a trailing zero.) - correct
answer 16 oz/lb x 4 oz = 0.25lb



12 lb + 0.25 lb = 12.25 lb



2.2 lb/kg x 12.25 lb = 5.568181 kg



5 mg/kg x 5.568181 kg = 27.840909 mg



27.840909 mg / 2(Q12H) = 13.920454 mg



ANS: 13.9 mg




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3.0 Dosage
Calculation
by Weight
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A nurse is preparing to administer erythromycin ethyl succinate 50 mg/kg/day PO divided in equal doses
every 6 hr to a toddler who weighs 32 lb. Available is erythromycin ethylsuccinate suspension
200mg/5ml. How many ml should the nurse administer per dose?

(Round to the nearest whole number. Use a leading 0 if it applies. Don't use a trailing zero.) - correct
answer 2.2 lb/kg x 32 lb = 14.545454 kg



50 mg/kg x 14.545454 kg = 727.272727 mg



727.272727 mg / 4 (Q6H) = 181.818181 mg



200 mg/5ml x 181.818181 mg = 4.545454 mL



ANS: 4.5 ml



A nurse is preparing to administer gentamicin to a client who weighs 165 lb. The medication reference
recommends administering 2 mg/kg IM every 8 hr. How many mg should the nurse plan to administer
per dose?

(Round to the nearest whole number.) - correct answer 2.2 lb/kg x 165 lb = 75 kg



2 mg/kg x 75 kg = 150 mg



ANS: 150 mg



A nurse is preparing to administer phenytoin 15 mg/kg/day PO divided in three equal doses to a client
who weighs 120 lb. Available is phenytoin suspension 125 mg/5ml. How many ml should the nurse
administer per dose?

(Round to the nearest whole number.) - correct answer 2.2 lb/kg x 120 lb = 54.545454 kg



15 mg/kg x 54.545454 kg = 818.18181 mg



818.18181 mg / 3 = 272.727272 mg




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ATI Dosages byATIWeight
Dosages
Dosage
by Weight
Calculation
Dosage
3.0 Dosage
Calculation
by Weight
3.0 Dosage
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