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# calculations

### common calculations for pharmacy tech exam

celcius to farenheight C(1.8)+32
farenheight to celcius (F-32)/1.8
IV flow rate: calculate ml/time total volume/total time
IV flow rate: calculate gtt/min total volume x dropfactor/total time (min)
what is: Fried's Rule to determine dosage for newborns to 2 years
Fried's Rule = age in months/150 x adult dose
what is: Young's Rule To determine dosage for children ages 1 to 12
Young's Rule = age (in years)/age (in years) + 12 x normal adult dose
what is: Clark's Rule to determine dosage for children (2 & up) by weight
Clark's Rule = childs weight in lbs/150 lbs x adult dose
convert lbs to kilograms kg = lbs/2.2
convert kilograms to lbs lbs = kg x 2.2
calculate v/t when gtt/time and dropfactor are known gtt per time / drop factor
computation of dose by body weight (when adult dose/kg is known) total weight in kg x dose/kg = dosage
dose by body weight for child (when adult dose/kg is known) (total weight in kg x adult dose/kg) / 1.7
Created by: pfunkdesign

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