ATI Dosages by Weight A+ Correct
Solutions
a nurse is caring for an infant who weighs 11 lb 4 oz. what is the infant's weighs in lb? -
ANS-4 oz / 16 = 0.25 + 11 = 11.25 lbs
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? - ANS-165 lbs / 2.2 = 75 kg 75 kg x 2
mg/kg
= 150 mg
A nurse is preparing to administer ampicillin 50 mg/kg/day PO divided in equal doses
every 8 hr to a child who weighs 39.6 lb. available is 250 mg/5mL how many mL should
the nurse administer per dose? - ANS-39.6 lbs / 2.2 = 18 kg
50 mg/kg/day x 18 kg = 900 mg/day
900 mg/day / 3 [dose divided equally over 8 hrs] = 300 mg
300 mg / 50 mg/ml
= 6 ml
A nurse is preparing to administer valproic acid 45 mg/kg/day PO divided in equal doses
every 8 hr to a child who weighs 66 lbs. Available is valproic acid syrup 250 mg/5 ml.
How many ml should the nurse administer per dose? - ANS-.2 = 30 kg 45
mg/kg/day x 30 kg = 1,350 mg/day
1,350 mg/day / 3 = 450 mg / 50 mg/ml = 9 mL
A nurse is preparing to administer tobramycin 2.5 mg/kg IM to a preschooler who
weighs 20 kg. Available is tobramycin injection 40 mg/ml. How many ml should the
nurse administer per dose? - ANS-2.5 mg/kg x 20 kg = 50 mg / 40 mg/mL = 1.25 mL =
1.3 mL
A nurse is preparing to administer acyclovir 5 mg/kg IV bolus every 8 hr to a client who
weighs 75 lb. How many mg should the nurse administer per dose? - ANS-75 lbs / 2.2 =
34.09
5 mg/kg x 34.09 kg = 170.5 mg
- do not include the 8 hr because its just specifying the dosage amount not the amount
per day!
Solutions
a nurse is caring for an infant who weighs 11 lb 4 oz. what is the infant's weighs in lb? -
ANS-4 oz / 16 = 0.25 + 11 = 11.25 lbs
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? - ANS-165 lbs / 2.2 = 75 kg 75 kg x 2
mg/kg
= 150 mg
A nurse is preparing to administer ampicillin 50 mg/kg/day PO divided in equal doses
every 8 hr to a child who weighs 39.6 lb. available is 250 mg/5mL how many mL should
the nurse administer per dose? - ANS-39.6 lbs / 2.2 = 18 kg
50 mg/kg/day x 18 kg = 900 mg/day
900 mg/day / 3 [dose divided equally over 8 hrs] = 300 mg
300 mg / 50 mg/ml
= 6 ml
A nurse is preparing to administer valproic acid 45 mg/kg/day PO divided in equal doses
every 8 hr to a child who weighs 66 lbs. Available is valproic acid syrup 250 mg/5 ml.
How many ml should the nurse administer per dose? - ANS-.2 = 30 kg 45
mg/kg/day x 30 kg = 1,350 mg/day
1,350 mg/day / 3 = 450 mg / 50 mg/ml = 9 mL
A nurse is preparing to administer tobramycin 2.5 mg/kg IM to a preschooler who
weighs 20 kg. Available is tobramycin injection 40 mg/ml. How many ml should the
nurse administer per dose? - ANS-2.5 mg/kg x 20 kg = 50 mg / 40 mg/mL = 1.25 mL =
1.3 mL
A nurse is preparing to administer acyclovir 5 mg/kg IV bolus every 8 hr to a client who
weighs 75 lb. How many mg should the nurse administer per dose? - ANS-75 lbs / 2.2 =
34.09
5 mg/kg x 34.09 kg = 170.5 mg
- do not include the 8 hr because its just specifying the dosage amount not the amount
per day!
