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ATI Dosages by Weight Dosage Calculation 3.0 Dosage by Weight Test – 25 Q/A
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ATI Dosages by Weight Dosage Calculation 3.0 Dosage by Weight Test – 25 Q/A
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ATI Dosages by Weight DosageCalculation 3.0 Dosage by Weight Test –
25 Q/A
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.) - -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.) - -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
-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.) - -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.) - -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.) - -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.) - -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.) - -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
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