Deck 7: Dosage Calculations

Question 1

A ________ is a representation of how two similar quantities are related to each other.

A) Decimal
B) Proportion
C) Ratio
D) Whole number

Answer 1

C

Question 2

How would you say the ratio "1:10"?

A) "One to ten"
B) "One and ten"
C) "One or ten"
D) "Ten to One"

Answer 2

A

Question 3

When finding equivalent ratios, you must do what to both sides of the ratio with the same number?

A) Divide
B) Multiply
C) Factor
D) Multiply and divide

Answer 3

D

Question 4

Which of the following are equivalent ratios?

A) [2/3] and [4/7]
B) [4/9] and [8/9]
C) [2/5] and [4/10]
D) [1/3] and 2/5]

Question 5

What is the name for an equation that states two ratios are equal?

A) Equal ratio
B) Equivalent ratios
C) Proportion
D) Fraction

Question 6

When the terms of a proportion are multiplied, the cross products are:

A) Unequal
B) Equal
C) Opposing
D) Small numbers

Question 7

What type of mathematical process is frequently used within medical practice to determine correct doses and amounts of drugs needed to mix medications?

A) Cross multiplication
B) Cross division
C) Factoring
D) Carrying

Question 8

What are the values within a proportion called?

A) Means and modes
B) Numerator and denominator
C) Extremes and modes
D) Means and extremes

Question 9

Where are the "means" located in a written proportion?

A) Outer ends
B) Beside each other
C) To the left and right of the equal sign
D) At the end

Question 10

Where are the "extremes" located in a written proportion?

A) Beside each other
B) Outer ends
C) At the beginning
D) To the left and right of the equal sign

Question 11

If a variable is unknown in a proportion, is it possible to find the value of the unknown variable?

A) No
B) Yes
C) In some cases
D) Only when the know variables are even numbers

Question 12

The ratio-proportion method is based on comparing a known ratio with a(n) what?

A) Proportion
B) Unknown ratio
C) Equivalent ratio
D) Known ratio

Question 13

What is another name for a solution of known concentration?

A) Simple solution
B) Dosage solution
C) Stock solution
D) Available solution

Question 14

When calculating drug doses, what method is commonly used to solve for a missing value?

A) Ratio-proportion method
B) Ratio-Ratio method
C) Cross multiplication method
D) Volume-Stock method

Question 15

Prior to using the ratio-proportion method, what must all the measurements have in common?

A) System of measurement
B) Stock solution used
C) Value
D) Proportion

Question 16

When converting a ratio to a percent, what must happen first?

A) Multiply the fraction by a number
B) Express the final value with a percent sign
C) Divide the fraction into itself
D) Convert the ratio to a fraction

Question 17

Which of the following is the most common, and the safest, system of measurement used in medical practice?

A) Apothecary system
B) Common household system
C) International units
D) Metric system

Question 18

When using the common household measurement system, how many teaspoons equal a tablespoon?

A) 4
B) 2
C) 3
D) 5

Question 19

How many ounces is a pound according to the apothecary system of measurement?

A) 10
B) 20
C) 12
D) 15

Question 20

The metric system is based on the decimal system, with all units being described in multiple of what?

A) 10
B) 12
C) 5
D) 20

Question 21

What is the metric system unit for measuring dry weight?

A) Liter
B) Milliliter
C) Meter
D) Gram

Question 22

A (n) ______ of a drug is the quantity that is intended to be administered, usually taken at one time or during one specified period such as per day.

A) Dose
B) Dosage
C) Unit
D) Measurement

Question 23

A graph that estimates the Body-surface area (BSA) of a patient based on height and weight is called a(n):

A) Proportion-ratio
B) Dosage
C) Nomogram
D) Hectogram

Question 24

For pediatric patients, doses based directly on ________ are the safest and most common choices to establish pediatric doses.

A) BSA (Body-surface area)
B) Young's rule
C) Clark's rule
D) Informed estimation

Question 25

An average adult has a BSA of what?

A) 2 m²
B) 1 m²
C) 1.73 m²
D) 0.5 m²