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.) - Answer- 2.2 lb/kg = 40 lb - 18. kg 50 units/kg x 18. kg = 909. units 2,000 units/ml = 909. units - 0.ml 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.) - 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. kg 5 mg/kg x 5. kg = 27. mg 27. mg / 2(Q12H) = 13. mg ANS: 13.9 mg 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.) - Answer- 2.2 lb/kg x 32 lb = 14. kg 50 mg/kg x 14. kg = 727. mg 727. mg / 4 (Q6H) = 181. mg 200 mg/5ml x 181. mg = 4. mL