Childrens Dosages CHILDRENS DOSES These doses are affected

CHILDREN’S DOSES • These doses are affected by the individual’s age, weight, body surface

YOUNG’S RULE • Uses age in years as a guide. Young’s Rule = Age

YOUNG’S RULE PROBLEM • A 10 -year-old child weighs 90 lb. How much medication

CLARK’S RULE • Uses weight as the determining factor. Clark’s Rule = Weight of

CLARK’S RULE PROBLEM • What is the correct dosage for a 25 -lb child

FRIED’S RULE • Uses age in months as the determining factor. Fried’s Rule =

FRIED’S RULE PROBLEM • A 15 month old infant needs streptomycin sulfate. An adult

WEIGHT CALCULATIONS • Mg/kg uses weight in terms of kg for a patient. •

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Children’s Dosages

CHILDREN’S DOSES • These doses are affected by the individual’s age, weight, body surface area, organ development, sex and disease state.

YOUNG’S RULE • Uses age in years as a guide. Young’s Rule = Age of child (expressed in yrs) Age of child (in yrs) + 12 Adult dose

YOUNG’S RULE PROBLEM • A 10 -year-old child weighs 90 lb. How much medication should the child receive if the adult dose is 30 mg. • Answer: _____13. 64 mg_______

CLARK’S RULE • Uses weight as the determining factor. Clark’s Rule = Weight of child (expressed in pounds) 150 Adult Dose

CLARK’S RULE PROBLEM • What is the correct dosage for a 25 -lb child if the adult dose is 100 mg? • Answer: ______16. 67 mg____

FRIED’S RULE • Uses age in months as the determining factor. Fried’s Rule = Age of child (in months) 150 Adult Dose

FRIED’S RULE PROBLEM • A 15 month old infant needs streptomycin sulfate. An adult dosage is 1 gm. What is the appropriate dosage for the infant in mg? • Answer: ___100 mg____

WEIGHT CALCULATIONS • Mg/kg uses weight in terms of kg for a patient. • 1 kg = 2. 2 lbs Problem: The dose ordered is 15 mg/kg BID. The baby weighs 12 lbs. How much drug is to be given for one dose? 1. Convert the 12 lbs to kg (12/2. 2 = 5. 45 kg) 2. Multiply 15 times 5. 45 = 81. 75 mg

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