Deck 2: The Metric System and Drug Dosage Calculations

Question 1

If a drug order is written for 0.25 mg/kg of body weight,what dosage would be administered to a patient weighing 88 lb?

A)10 mg
B)22 mg
C)40 mg
D)44 mg

Answer 1

10 mg

Question 2

A dosage of 4 mg of morphine sulfate is ordered for a patient.How many milliliters will be administered from a vial containing 10 mg/ml?

A)0.1 ml
B)0.4 ml
C)1 ml
D)4 ml

Answer 2

0.4 ml

Question 3

What is the percentage strength of 20 mg of cromolyn sodium in 2 ml of normal saline?

A)1%
B)2%
C)10%
D)20%

Answer 3

1%

Question 4

A newborn's length at birth is measured as 45.7 centimeters.What is the newborn's length in inches?

A)17 in
B)18 in
C)19 in
D)20 in

Question 5

An adult female patient weighs 125 lb.In order to determine a mechanical tidal volume,you must convert her weight to kilograms.What is her weight in kilograms?

A)275 kg
B)63 kg
C)57 kg
D)28 kg

Question 6

How much solute is in 3 ml of a 1:100 weight/volume solution?

A)10 ml
B)10 mg
C)20 ml
D)30 mg

Question 7

What would the new concentration be,in percentage,of 1.5 ml of a 10% solution that has been increased to 3.0 ml with normal saline?

A)0.05%
B)0.5%
C)5%
D)20%

Question 8

A medication bag contains 0.03 liters.This is equal to how many milliliters?

A)3
B)30
C)300
D)3,000

Question 9

A rescue dosage of surfactant calls for 3 ml/kg body weight.If a premature infant weighs 1,500 g,how many milliliters are needed?

A)5.0 ml
B)9.0 ml
C)0.45 ml
D)4.5 ml

Question 10

A solution of drug contains 80 units/ml.How many milliliters would you need to deliver 320 units of the drug?

A)0.4 ml
B)4 ml
C)14 ml
D)40 ml

Question 11

A patient's height is reported as 5 feet 6 inches.What is the patient's height in centimeters?

A)26 cm
B)30 cm
C)145 cm
D)167 cm

Question 12

A patient who is 5-feet-10 inches tall is how many centimeters tall?

A)286 cm
B)32 cm
C)154 cm
D)178 cm

Question 13

A homogeneous mixture of two or more substances is referred to as:

A)Dissolved.
B)A solvent.
C)A solute.
D)A solution.

Question 14

Virazole is supplied in a powder form that must be mixed with normal saline or sterile water prior to nebulization.This type of solution represents a:

A)Solid/solvent
B)Weight/volume
C)Liquid/solute
D)Volume/volume

Question 15

Which of the following terms is a synonym for "active ingredient"?

A)Solution
B)Solute
C)Solvent
D)Saline

Question 16

How much active drug is in 3 ml of a 10% solution?

A)0.3 g
B)1 g
C)0.3 mg
D)1 mg

Question 17

A patient who weighs 55 kilograms is to receive a drug dosage of 10mg/kg.How much drug should be administered?

A)550 mg
B)250 mg
C)25 mg
D)5.5 mg

Question 18

While preparing an aerosol bronchodilator for a patient,you place 0.5 ml of a 1% drug solution into a small-volume nebulizer.If you add 5 ml of saline instead of 2 ml of saline,the delivered dose of drug will:

A)Increase
B)Decrease
C)Remain the same
D)Weaken the drug response

Question 19

A patient with a tidal volume of 400 milliliters has a tidal volume of how many liters?

A)40
B)4
C).400
D).04

Question 20

You have just assisted in the care of a premature infant who weighs 600 g.The baby's mother asks you what the weight is in pounds.You calculate the baby's weight as:

A)4.1 lb
B)3.5 lb
C)2.7 lb
D)1.3 lb

Question 21

You receive an order for 16 gtt of Mucomyst.How many milliliters of drug would you be administering to the patient?

A)0.5 ml
B)1 ml
C)1.5 ml
D)5 ml TRUE/FALSE
Write 'T' if the statement is true and 'F' if the statement is false.

Question 22

Weight is measured as ____________ or ________________ in the metric system.

Question 23

The United States Customary System of Measurement is based on the _______________.

Question 24

______ 8.A solute can either be a liquid or a solid that is dissolved in a liquid.

Question 25

______10.The use of body surface area (BSA)is an appropriate method to determine a patient's overall size.
FILL-IN-THE-BLANK
Write the word or phrase that best completes each statement.

Question 26

______ 7.Converting a measure from milliliters to liters is accomplished by moving the decimal point three places to the right.

Question 27

A liquid or solid that is dissolved in a solution is known as a ________________.

Question 28

______ 3.Normal saline in solution with albuterol is known as the solvent.

Question 29

Terbutaline sulfate is available as 1 mg/1 ml in an ampule.How many milliliters are needed to administer a 0.75 dose?

A)1.5 ml
B)0.75 ml
C)0.15 ml
D)0.30 ml

Question 30

______ 5.When calculating drug dosages based on a patient's weight in kilograms,a respiratory therapist can use the BSA nomogram to convert from pounds to kilograms.

Question 31

The metric unit of measurement for length is ________________,and the metric measurement for volume is ________________.

Question 32

What strength of drug would be administered if 6 g of active ingredient is reconstituted with sterile water to a total volume of 300 ml?

A)2% strength
B)0.5% strength
C)20% strength
D)50% strength

Question 33

______ 9.A weight/volume solution is representative of the amount of liquid solute in a volume of solution.

Question 34

______ 6.The International System is the system of measure used in health care.

Question 35

______ 1.The Joint Commission recommends that a zero always be placed after the decimal point when referring to drug dosage.

Question 36

Promazine comes in a 550-mg/10-ml liquid solution.How many milliliters are needed to give a 200-mg dose?

A)3.6 ml
B)30 ml
C)0.3 ml
D)3 ml

Question 37

______ 4.When a solute is being dissolved in a powder,the solution is termed a volume/volume solution.

Question 38

If a drug contains 6% active ingredient,how many grams of the active ingredient would you need in a 30-ml dose?

A)18 g
B)36 g
C)1.8 g
D)3.6 g

Question 39

______ 2.The method used to convert between the English and metric systems is referred to as the factor-label method.

Question 40

The metric system of measurement is based on the __________________.

Question 41

How can you express the strength of a drug in solution?

Question 42

What do Joint Commission standards recommend for abbreviating cubic centimeter volume?

Question 43

How can you determine how much drug to administer if the drug available is not supplied in the prescribed amount?

Question 44

The Joint Commission standards recommend the use of ________________ rather than centimeters (cc)to avoid misinterpretation of the ordered amount.

Question 45

To convert from liters to milliliters the decimal point is moved ___________ places to the ___________.

Question 46

Give an example of converting between the English and metric systems using the factor-label method.

Question 47

Explain the difference between a weight/volume solution and a volume/volume solution.