# Pharmacology – Dosage calculations

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apothecary system
a very old system of measure that was specifically developed for use by apothecaries or pharmacists; it uses the minim as the basic unit of liquid measure and the grain as the basic unit of solid measure.

Clark’s rule
a method of determining the correct drug dose for a child based on the known adult dose (assumes that the adult dose is based on a 150-lb person)

Child’s dose = weight of the child/150lb x average adult dose

Conversion
inding the equivalent values between two systems of measure

Fried’s rule
A method of determining a pediatric drug dose for a child younger than 1 year of age, based on the child’s age and the usual adult dose (assumes that an adult dose would be appropriate for a 12.5-year-old child); it states

Child’s dose (1 y) = weight of the child(mo)/150mo x average adult dose

Metric system
he most widely used system of measure, based on the decimal system; all units in the system are determined as multiples of 10

Ratio and proportion
an equation in which a ratio containing two known equivalent amounts is on one side and a ratio containing the amount desired to convert and its unknown equivalent is on the other side

Young’s rule
method for determining pediatric drug dose based on the child’s age and the usual adult dose; it states

Child’s dose (1-12 y) = child’s age (y)/child’s age (y) +12 x average adult dose

Does not use a colon
Do not use AM/PM
Military time

0600
6am in military time

2224
10:24pm in military time

1645
4:45pm in military time

0313
3:13am in military time

1,000mcg
How many mug in 1mg

1,000g
How many grams in 1kg

1,000mg
How many mg in 1g

2.2lbs
How many lbs are in 1kg

30mL
How many mL in 1oz

1cc
How many cc in 1mL

1tsp
How many tsp in 5mL

1,000mL
How many mL in 1L

3 tsp
How many tsp in 1 tbsp

15mL
How many mL in 1 tbsp

2 tbsp
How many tbsp in 1 oz

0.5-3 mL volume
Most IM dosages are contained in a

Larger volumes
IV additives may be contained in

Units
____ is never abbreviated

5 numbers
Commas are not used in a quantity at least ___

Milliequivalents
The number of grams of a drug contained in 1 mL of a normal solution

1 mL
3 mL
5 mL
10 mL
20 mL
60 mL

*insulin is orange

Syringe types

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Oral Medications: Scored Tablets Calculate to the tenth and round to the nearest half tablet: 1.5 tablets = give …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Order: Calan 40 mg p.o. t.i.d. Have 80 mg tablets Give: 1/2 tablet 3 times a day Order: clonazepam …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy ?Practice Test for HESI Examination – Pediatric Calculations Dr. Pandya has a pediatric patient with Ewing’s sarcoma who needs …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy proper fraction numerator is smaller than the denominator improper fraction numerator is equal or larger than the denominator WE …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Formula method Desired amount (doctor’s order) divided by total amount of drug on hand then multiplied by total volume …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy ratios comparisons between two things proportion statement saying those two ratios are equal WE WILL WRITE A CUSTOM ESSAY …

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