Deck 27: Pharmacology Math

Question 1

In the formula D/H * Q, the H stands for the

A) child's height.
B) hour the medication is ordered.
C) dosage strength identified on the label.
D) amount of drug identified on the label.

Answer 1

dosage strength identified on the label.

Question 2

One fluid ounce is equal to ____ mL.

A) 20
B) 15
C) 25
D) 30

Answer 2

30

Question 3

Your patient is to receive Precef 20 mg/kg every 12 hours. The patient weighs 88 pounds. What is the correct dose?

A) 500 mg
B) 600 mg
C) 800 mg
D) 1000 mg

Answer 3

800 mg

Question 4

How many milligrams equal 150 mcg?

A) 0.015 mg
B) 0.15 mg
C) 1.5 mg
D) 15 mg

Question 5

Which of the following is a household measure?

A) Gram
B) Grain
C) Drop
D) cc

Question 6

You need to give Lanoxin 0.125 mg. All you have is 0.250-mg tablets. How much do you give?

A) 2 tablets
B) 5 tablets
C) 1/2 tablet

Question 7

A total of 180 mg of a medication is to be taken each day, and the medication is ordered tid. What would be the individual dose?

A) 45 mg
B) 90 mg
C) 36 mg
D) 60 mg

Question 8

How many liters equal 1,500 cc?

A) 1.5 L
B) 15 L
C) 150 L
D) 0.15 L

Question 9

The physician orders 75 mg of Demerol IM. The drug label states, "Demerol 50 mg/mL." How many milliliters should be administered?

A) 1 mL
B) 1.2 mL
C) 1.5 mL
D) 2.1 mL

Question 10

A child who weighs 70 pounds weighs how many kilograms?

A) 140 kg
B) 154 kg
C) 32 kg
D) 30 kg

Question 11

How many ounces equal 150 mL?

A) 50 oz
B) 3.2 oz
C) 32 oz
D) 5 oz

Question 12

One teaspoon is equal to _____ mL.

A) 5
B) 15
C) 30
D) 60

Question 13

To convert liters to milliliters

A) multiply by 10.
B) divide by 100.
C) multiply by 1,000.
D) divide by 1,000.

Question 14

How many cubic centimeters equal 2.5 teaspoons?

A) 10 cc
B) 15 cc
C) 5 cc
D) 12.5 cc

Question 15

How many fluid ounces equal 90 mL?

A) 20 fl oz
B) 3.5 fl oz
C) 3 fl oz
D) 4 fl oz

Question 16

Which of the following is a metric unit of volume?

A) Ounce
B) mL
C) mg

Question 17

How many tablespoons equal 16 ounces?

A) 8 Tbsp
B) 32 Tbsp
C) 24 Tbsp
D) 12 Tbsp

Question 18

How many milligrams equal 0.75 g?

A) 75 mg
B) 750 mg
C) 7.5 mg
D) 7,500 mg

Question 19

Which of the following is a metric unit of length?

A) cm
B) mL
C) mg
D) kg

Question 20

A pediatric patient weighing 20 pounds is prescribed amoxicillin; the label states that 10 mg/kg should be administered each day. What is the total daily dose?

A) 91 mg/day
B) 440 mg/day
C) 90 mg/day
D) 45 mg/day

Question 21

What is the ratio for the decimal 0.20?

A) 2:4
B) 2:5
C) 1:5
D) 1:6

Question 22

Which of the following fractions reflect the lowest possible term of 5/15?

A) 1/2
B) 2/3
C) 3/8
D) 1/3

Question 23

Which of the following measures the weight or strength of a solid medication such as a tablet, powder, or topical preparation?

A) Liter
B) Gram
C) Meter
D) All of the above

Question 24

Federal law requires that all drug labels have a _________ that identifies that particular drug.

A) generic and trade name
B) expiration date
C) lot number
D) National Drug Code number

Question 25

Convert 524 mg tog.

A) 52,400 g
B) 5,240 g
C) 0.524 g
D) 5.24 g

Question 26

One inch is equal to ____ cm.

A) 1.5
B) 2
C) 4
D) 2.5

Question 27

The prefix milli in the metric system means

A) 1/100.
B) 0.001.
C) 1/10.
D) 1/1,000.
E) B and D.

Question 28

The physician prescribes 500 mg of Keflex. The available dose is 1 g/tab. How many tablets should the patient receive.

A) 2 tabs
B) 1.5 tabs
C) 1/2 tab
D) 1.25 tabs

Question 29

The metric system of weights and measures is a decimal system based on units of

A) 1.
B) 10.
C) 100.
D) 5.

Question 30

The physician orders 7.5 mL of Cipro for a pediatric patient. How many teaspoons should the parent administer?

A) 7.5 tsp
B) 1.5 tsp
C) 3 tsp
D) 1 tsp

Question 31

The physician prescribes 0.5 g of ampicillin. The label states, "Ampicillin 500 mg/5 mL." How many milliliters should be administered?

A) 25 mL
B) 5 mL
C) 2.5 mL
D) 1 mL

Question 32

Which of the following is true about a drug's brand name on a medication label?

A) The generic name is always listed on the label before the brand name.
B) The brand name must be listed on all drug labels.
C) The brand name is followed by a symbol that designates patent protection.
D) If a medication is stocked as a generic drug, the brand name is listed under the generic name.

Question 33

Starting at the top of a drug label, the drug's name is directly followed by what information?

A) Dosage and strength of the medication
B) The route or method of administration
C) Name of drug manufacturer
D) None of the above

Question 34

The physician prescribes 0.125 mg of Synthroid. On hand you have 0.25-mg tabs. What should you administer?

A) 1/2 tab
B) 2 tabs
C) 2 1/2 tabs
D) 1 tab

Question 35

The physician prescribes 0.25 g of penicillin. The available drug is 250 mg/tablet. What would you administer to the patient?

A) 2 tabs
B) 1 tab
C) 2.5 tabs
D) 1.5 tabs

Question 36

What is the first thing you should do if the dose of the supplied drug does not exactly match your calculation?

A) Check your calculation for accuracy
B) Check the stocked supply of the drug to make sure no other doses are available
C) Round your answer to the nearest amount that matches the dose available
D) Check with the provider before administering a rounded dose of medication

Question 37

What is the answer for the proportion 6:4 = 3:x?

A) 2
B) 4
C) 1
D) 3

Question 38

What must be done to divide fractions?

A) Divide the numerators by the denominators
B) Invert the divisor
C) Multiply the numerators and the denominators
D) Both A and B
E) Both B and C

Question 39

A physician prescribes administration of 100 mg of a drug. The drug label states that there are 150 mg per milliliter in a multidose vial that contains 5 mL. What is the available amount of the drug, according to the standard formula?

A) 150 mg
B) 5 mL
C) 100 mg
D) 1 mL

Question 40

Decimal numbers can be converted to percentages by?

A) Dividing the number by 100
B) Moving the decimal point two spaces to the right
C) Both A and B
D) None of the above

Question 41

The most frequently used method for calculating pediatric doses relies on which of the following factors?

A) Differences in absorption
B) Differences in drug metabolism
C) Age
D) Weight in kg
E) All of the above

Question 42

What is the formula D * Q/H used to calculate?

A) Drug doses
B) Conversions
C) Desired dose
D) Quantity of units

Question 43

Describe the three basic steps for calculating the prescribed dose of medication accurately.

Question 44

Explain the steps in determining a single pediatric dose of medication based on the child's weight of 42 pounds; the medication label states: Administer 6 mg/kg qid.

Question 45

The comparison of two ratios is called a(n) __________.

Question 46

The top number in a fraction is the __________.

Question 47

The fraction 9/8 is an example of a(n) __________ fraction.

Question 48

Convert the following improper fractions to whole number or decimal equivalents:
a. 12/7 = ________.
b. 18/9 = ________.
c. 4/3 = ________.
d. 5/2 = ________.

Question 49

Perform the following math problems with the fractions reduced to their lowest terms
a. 2/3 * 8/7 = ______.
b. 9/8 ÷ 6/10 = _____.
c. 3/4 * 1/2 = _____.
d. 2/5 ÷ 2/3 = _____.

Question 50

Always in a proportion, the problem is solved by __________.

Question 51

The __________ is the bottom number of a fraction.

Question 52

Correctly convert the following metric units of measurement
a. 14 mcg = ____ mg
b. 3.7 g = ____ kg
c. 1.12 kg = ____ g
d. 0.33 L = ____ mL
e. 49.6 mg = ____ g
f. 96.4 mL = ____ L

Question 53

Round the following calculations to the nearest tenth:
a. 1.673
b. 7.829
c. 4.556
d. 9.16
e. 12.325

Question 54

Convert the following
a. 23 lb = ____ kg.
b. 286 lb = ____ kg.
c. 220 lb = ____ kg.
d. 15.6 kg = ____ lb.
e. 3 kg = ____ lb.
f. 98 kg = ____ lb.

Question 55

The __________ system of measurement is the most common measurement system used in pharmacology throughout the world.

Question 56

When calculating dosage based on body weight, which step is to calculate a single dose of the drug based on how frequently the medication is to be given throughout the day?

A) Step 1
B) Step 2
C) Step 3
D) Step 4

Question 57

The correct dosage of medication may depend on which of the following factors?

A) Patient's age and weight
B) State of health
C) Other drugs being taken
D) All of the above

Question 58

Medications delivered from the pharmacy in individual doses are called __________ packs.

Question 59

The fraction 3/4 is an example of a(n) __________ fraction.

Question 60

__________ is one way of expressing a fraction or division problem; it shows the relationship of the numerator to the denominator.

Question 61

For children, to calculate the total daily dose of the medication the medical assistant must multiply the child's weight in grams by the amount of drug stated on the label that should be administered per kg per day.

Question 62

With the standard formula, the "ordered strength" of a drug is the amount of the drug identified on the label.

Question 63

The solvent is the powdered base of a drug that must be mixed with a sterile liquid before administration.

Question 64

If a medication has been on the market for a long time, the generic name may be the only one listed on the label.

Question 65

To prevent dosage errors, use a zero before and a terminal zero after the decimal point.

Question 66

Convert the following fractions into decimals, rounding the last digit as needed
a. 3/4 = ________.
b. 2/3 = ________.
c. 9/12 = _______.
d. 10/12 = _______.

Question 67

If a tablet is scored, the medication has been manufactured with an impression or a groove down the center of the tablet.

Question 68

The value 0.25 is equal to 25.0% and is commonly written as 25%.

Question 69

The correct dosage of a medication may depend on the patient's age, weight, and state of health or on what other drugs the patient may be taking.

Question 70

If the drug label states, "250 mg/mL," this means that each tablet has 250 mg of the drug.

Question 71

To convert a smaller unit of measurement to a larger one in the metric system, move the decimal point three places to the right.

Question 72

The meter is the measurement of length in the metric system.

Question 73

The basic measure of weight in the household system is the pound (lb).

Question 74

A drug label that states the percentage of the drug in the container (e.g., 4%) is identifying the dose of the medication to be administered.

Question 75

Determine the following equivalents
1. 0.47 = ____ (percent) = ____ (fraction) = ____ (ratio).
2. 92% = ____ (decimal) = ____ (fraction) = ____ (ratio).
3. 3/8 = ____ (ratio) = ____ (percent) = ____ (decimal).
4. 2:5 = ____ (fraction) = ____ (decimal) = ____ (percent).

Question 76

The lot number of the drug is an important item on the label, in case the medication is recalled by the pharmaceutical company that produced it.

Question 77

What are the correct doses of the following medications, rounded to the nearest tenth?
a. 1.38 cc = _____ cc
b. 2.13 mL = _____ mL
c. 0.62 mL = _____ mL
d. 3.15 cc = _____ cc

Question 78

The units of measure mL and cc are not the same.

Question 79

To convert a larger unit of measure to a smaller one in the metric system, move the decimal point three spaces to the left.

Question 80

The physician orders 140 mcg of a drug, which is equal to 1.4 mg.