Dimensional Analysis Chapter 13—Alternative Dosage Calculation Methods: Ratio-Proportion and Dimensional Analysis LATEST UPDATE 2022/2023

Dimensional Analysis Chapter 13—Alternative Dosage
Calculation Methods: Ratio-Proportion and Dimensional
Analysis LATEST UPDATE 2022/2023


1




PROBLEM

Compute the amount of medication that will be given to administer one dose of the following
medication orders using the Ratio-Proportion method to obtain your answers.

Assume all tablets are scored, when necessary. Round all parenteral administration orders that are over
1 mL to one decimal place. Round all parenteral administration orders under 1 mL to two decimal
places. Do not include zeros at the end of decimal numbers.

The problems and drug orders are presented for practice only, and actual prescribed dosages will vary
according to a patient’s age, condition, reaction, additional medications, and other factors.

1.
Order: Axid 0.3 g p.o. at h.s.
Supply: Axid 150 mg capsules
Give: capsules

ANS:
Equivalent 1g = 1000 mg




X = 1000 0.3
X = 300 mg


X capsules =

150X = 300
X = 2 capsules


2.
Order: Dilantin 25 mg p.o. t.i.d.
Supply: Dilantin chewable 50 mg
tablets Give: tablet(s)

ANS:


Dimensional Analysis Chapter 13—Alternative Dosage
Calculation Methods: Ratio-Proportion and Dimensional
Analysis LATEST UPDATE 2022/2023

, Dimensional Analysis Chapter 13—Alternative Dosage
Calculation Methods: Ratio-Proportion and Dimensional
Analysis LATEST UPDATE 2022/2023


X tablets =

50X = 25
X= table




Dimensional Analysis Chapter 13—Alternative Dosage
Calculation Methods: Ratio-Proportion and Dimensional
Analysis LATEST UPDATE 2022/2023