Transcription of Dosage Calculations
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Dosage Calculations
Dosage CalculationsAfter completing this chapter, youshould be able to: Solve one-step pharmaceuticaldosage Calculations . Set up a series of ratios andproportions to solve a singledosage calculation . Determine what informationyou will need to solve for, inaddition to any giveninformation, to properlycalculate dosages. Convert pediatric weights frompounds to kilograms. Accurately determine dosagesbased on mg/kg/day. Define common sig (signa)codes used on dosing of medications is important to ensure patientsafety. calculating dosages, Dosage regimens, andcompounding formulas involves the use of simple mathprinciples. You can solve many of these problems by settingup ratios and proportions using the information given in thequestion and keeping like units 8/31/07 2:39 PM Page 2 Chapter Five Dosage Calculations3 Sig RefresherThe sigportion of the prescription order, meaning signa, is where the instruc-tions for the patient are written.
CALCULATING THE QUANTITY TO DISPENSE EXAMPLE 5.3 How many Biaxin® 250 mg tablets should be dispensed? Rx—Biaxin® 250 mg T.. T po BID 10d Figure 5-4 Drug label for Biaxin. (Reproduced with permission of Abbott Laboratories.) Again, to solve this dosage calculation it is important to first determine
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