ATI Dosages by Weight Dosage Calculation 3.0 Dosage by Weight Test 2026-03-06
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
Page 1 ATI Dosages by Weight Dosage CalculationATI
3.0Dosages
Dosage by
by Weight
Weight Test.pdf
Dosage Calculation 3.0 Dosage by Weight Test
, ATI Dosages by Weight Dosage Calculation 3.0 Dosage by Weight Test 2026-03-06
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
Page 2 ATI Dosages by Weight Dosage CalculationATI
3.0Dosages
Dosage by
by Weight
Weight Test.pdf
Dosage Calculation 3.0 Dosage by Weight Test
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
Page 1 ATI Dosages by Weight Dosage CalculationATI
3.0Dosages
Dosage by
by Weight
Weight Test.pdf
Dosage Calculation 3.0 Dosage by Weight Test
, ATI Dosages by Weight Dosage Calculation 3.0 Dosage by Weight Test 2026-03-06
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
Page 2 ATI Dosages by Weight Dosage CalculationATI
3.0Dosages
Dosage by
by Weight
Weight Test.pdf
Dosage Calculation 3.0 Dosage by Weight Test
