ATI DOSAGE CALCULATION RN ADULT
MEDICAL SURGICAL PROCTORED
ASSESSMENT 3.0 2026 COMPREHENSIVE
STUDY GUIDE QUESTIONS AND ANSWERS
FULL SOLUTION GRADED A+
⩥ 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.)
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.)
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
125 mg/5 ml x 272.727272 mg = 10.909090 ml
ANS: 10.9 ml
⩥ A nurse is preparing to administer cefdinir to a child who weighs 44
lb. The medication reference recommends administering 7 mg/kg PO
every 12 hr. How many mg should the nurse plan to administer per
dose?
(Round to the nearest whole number.)
Answer: 2.2 lb/kg x 22 lb = 20 kg
7 mg/kg x 20 kg = 140 mg
ANS: 140 mg
⩥ A nurse is preparing to administer potassium gluconate 3 mEq/kg/day
PO divided in equal doses every 6 hr to a preschooler who weighs 42 lb.
Available is potassium gluconate liquid 20 mEq/15ml. How many ml
should the nurse administer per dose?
, (Round to the nearest whole number.)
Answer: 2.2 lb/kg x 42 lb = 19.090909 kg
3 mEq/kg x 19.090909 kg = 57.272727 mEq
57.272727 mEq / 4(Q6H) = 14.318181 mEq
20 mEq/15 ml x 14.318181 mEq = 10.738636 ml
ANS: 11 ml
⩥ A nurse is preparing to administer ceftazidime 40 mg/kg IV bolus
every 8 hr to a toddler who weighs 22 lb. Available is ceftazidime
injection 40 mg/ml. How many ml should the nurse administer per dose?
(Round to the nearest whole number.)
Answer: 2.2 lb/kg x 22 lb = 10 kg
40 mg/kg x 10 kg = 400 mg
40 mg/ml x 400 mg = 10 ml
ANS: 10 ml
MEDICAL SURGICAL PROCTORED
ASSESSMENT 3.0 2026 COMPREHENSIVE
STUDY GUIDE QUESTIONS AND ANSWERS
FULL SOLUTION GRADED A+
⩥ 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.)
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.)
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
125 mg/5 ml x 272.727272 mg = 10.909090 ml
ANS: 10.9 ml
⩥ A nurse is preparing to administer cefdinir to a child who weighs 44
lb. The medication reference recommends administering 7 mg/kg PO
every 12 hr. How many mg should the nurse plan to administer per
dose?
(Round to the nearest whole number.)
Answer: 2.2 lb/kg x 22 lb = 20 kg
7 mg/kg x 20 kg = 140 mg
ANS: 140 mg
⩥ A nurse is preparing to administer potassium gluconate 3 mEq/kg/day
PO divided in equal doses every 6 hr to a preschooler who weighs 42 lb.
Available is potassium gluconate liquid 20 mEq/15ml. How many ml
should the nurse administer per dose?
, (Round to the nearest whole number.)
Answer: 2.2 lb/kg x 42 lb = 19.090909 kg
3 mEq/kg x 19.090909 kg = 57.272727 mEq
57.272727 mEq / 4(Q6H) = 14.318181 mEq
20 mEq/15 ml x 14.318181 mEq = 10.738636 ml
ANS: 11 ml
⩥ A nurse is preparing to administer ceftazidime 40 mg/kg IV bolus
every 8 hr to a toddler who weighs 22 lb. Available is ceftazidime
injection 40 mg/ml. How many ml should the nurse administer per dose?
(Round to the nearest whole number.)
Answer: 2.2 lb/kg x 22 lb = 10 kg
40 mg/kg x 10 kg = 400 mg
40 mg/ml x 400 mg = 10 ml
ANS: 10 ml
