Step 1 22 lbs 1kg 17 lbs x 17 lbs x 1kg 22 lbs 77111 Step2 10mg 1kg x 77111 x

# Step 1 22 lbs 1kg 17 lbs x 17 lbs x 1kg 22 lbs 77111

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Step 1: 2.2 lbs / 1kg = 17 lbs / x = 17 lbs x 1kg / 2.2 lbs = _7.7111___ Step2: 10mg / 1kg = x / 7.7111 x = 10mg x 7.7111 / 1kg =77.111 _77.111 mg per dose____ Young’s Rule This rule is used when a manufacturer does not provide a dosing guideline for children and is only used for patients over the age of 1 year. Formula: Adult Dose ÷ ( Age+12) = Child's Dose Adult dose Age + 12 Example: A 10-year old patient is ordered Naprosyn and the adult dose is 500mg BID. What is the strength of the child’s dose? 500 mg ( 10 + 12 ) = 500 mg 22 = 22.7 mg 7
It’s your turn to practice solving problems based on what you learned in this lesson: 29.An 8-year-old patient is ordered ketoprofen and the adult dose is 10mg TID. What is the strength per dose needed for the patient? ___0.5 mg__ Fried’s Rule This rule is used when a manufacturer does not provide a dosing guideline for children and is only used for patients under the age of 1 year. Formula: ( Age in months ÷150) x Adult Dose = Child's Dose Childs age months 150 x Adult dose A 10-month old patient is ordered Tegretol and the adult dose is 200mg BID. What is the strength of the child’s dose? 200 mg x 10 150 = 13.3 mg It’s your turn to practice solving problems based on what you learned in this lesson: 30.A 4-month old patient is ordered amoxicillin and the adult dose is 500mg BID. What is the strength per dose needed for the patient? _10.7 mg___ Clark’s Rule This rule is used when a manufacturer does not provide a dosing guideline for children and is based on the child’s weight in lbs. 8
Formula: ( Weight ÷ 150) x Adult Dose = Childs Dose A 6-year old 55-lb patient is ordered Naprosyn and the adult dose is 500mg BID. What is the strength of the child’s dose? 55 150 x 500 mg = 183.3 mg 9

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