Deck 12: Methods of Dosage Calculations

Question 1

The dose on hand is found on which of the following documents?

A) medication administration record
B) drug label
C) medication card
D) prescription

Answer 1

drug label

Question 2

The _____ is the amount of drug and frequency of administration ordered by the physician.

A) dosage ordered
B) desired dose
C) dosage unit
D) dose on hand

Answer 2

dosage ordered

Question 3

The desired dose must be in the same unit of measurement as the

A) dosage strength.
B) dosage unit.
C) ratio strength.
D) dose on hand.

Answer 3

dose on hand.

Question 4

The dosage ordered is found on which of the following?

A) medication administration record (MAR)
B) eMAR
C) drug label
D) prescription

Question 5

The prescription reads Paxil 40 mg po daily. Forty (40) mg is the

A) dose on hand.
B) dosage ordered.
C) dosage unit.
D) dosage strength.

Question 6

The desired dose is

A) the amount of drug contained in each dosage unit.
B) the units by which a drug is measured when it is administered.
C) the amount of drug contained in multiple dosage units.
D) the amount of drug to be given at a single time.

Question 7

Which of the following is not used to calculate the desired dose?

A) formula method
B) proportion method using ratios
C) dimensional analysis method
D) proportion method using fractions

Question 8

In a proportion using ratios, when can units of measure be canceled?

A) They can never be canceled.
B) when they are found in the same part of each ratio
C) when they are found in opposite parts of each ratio
D) when they are found in the first ratio

Question 9

The correct formula for calculating the amount to administer by the formula method is _________.

A)
B)
C)
D)

Question 10

Which of these is used to determine the amount to administer using proportion with ratios?

A)
B) H : Q = D : A
C)
D)

Question 11

Which of these is used to determine the amount to administer using proportion with fractions?

A)
B) Q : H = A : D
C)
D)

Question 12

The amount to administer is the

A) dose on hand per dosage unit.
B) amount of drug contained in each dosage unit.
C) volume of a liquid or the number of solid dosage units that contains the desired dose.
D) units by which the drug will be measured when it is administered.

Question 13

The quantity of solid or liquid in which the dose is supplied is the

A) dosage ordered.
B) dosage unit.
C) dosage strength.
D) supply dose.

Question 14

The supply dose is also known as the

A) desired dose.
B) dose on hand.
C) dosage unit.
D) dosage strength.

Question 15

The dosage strength for Dilantin is

A)
B)
C)
D)

Question 16

The order for Synthroid is 0.1 mg per day. What is the amount to administer?

A) 0.5 tablet
B) 2 tablets
C) 1 tablet
D) 3 tablets

Question 17

What is the dose on hand for Nitrostat?

A)
B) 0.4 mg
C) tablet
D) 100 tablets

Question 18

What is the supply dose for this medication?

A) 0.4 mg
B)
C)
D) tablet

Question 19

What is the dosage strength of Flumadine?

A) not given
B) 1 tablet
C) 100 mg
D)

Question 20

The physician ordered 0.1 g Flumadine po bid * 7 days. The amount to administer per dose will be

A) 2 tablets
B) 0.5 tablet
C) 1 tablet
D) 1.5 tablets

Question 21

What is the dosage unit for amiodarone HCl?

A) 1 mL
B)
C) 50 mg
D)

Question 22

The physician ordered amiodarone 75 mg IV stat. What is the amount to administer?

A) 1 mL
B) 1.5 mL
C) 2 mL
D) 2.5 mL

Question 23

The physician ordered Cefprozil 87.5 mg po q12h for 10 days. What is the amount to administer?

A) 5 mL
B) 2.5 mL
C) 3.5 mL
D) 1 tsp

Question 24

Physician order: Cefprozil 1.5 tsp po q12h for 2 days. What is the desired dose?

A) 150 mg
B) 7.5 mL
C) 10 mL
D) 187.5 mg

Question 25

Ordered: Cefprozil 1 tsp po q12hr for 10 days. What is the desired dose?

A) 125 mg
B) 10 mL
C) 5 mL
D) 75 mg

Question 26

Mr. Henderson was seen in the clinic after slicing his arm on a mower blade. The physician cleaned up the wound and inserted eight sutures to hold the edges of the wound together while it heals. The physician tells the patient to take 1 gram of Tylenol every 6 hours as needed for pain. Later that afternoon, Mr. Henderson calls the office. He says he has looked in two different drugstores, but no one seems to carry Tylenol in a strength of 1 gram. He asks what he should do. What should you tell him?

A) Tylenol 1 g is prescription strength, so you will ask the physician to send a medication order to the patient's pharmacy.
B) Purchase Tylenol Extra Strength, which contains 500 mg per caplet, and take 2 caplets every 6 hours as needed.
C) Purchase Tylenol Extra Strength, which contains 500 mg per caplet, and take 3 caplets every 6 hours as needed.
D) Purchase Tylenol Regular Strength, which contains 325 mg per tablet, and take 4 caplets every 6 hours as needed.

Question 27

A child is brought to the emergency room by ambulance after collapsing while playing basketball with friends. The paramedics obtain an ECG and send it to the emergency room from the ambulance. The physician diagnoses a supraventricular tachycardia and asks Wendy to prepare to administer 1.5 mg of adenosine IV when the child arrives at the hospital. On hand, the ER has prefilled disposable syringes with adenosine . What amount should Wendy administer?

A) 0.5 mL
B) 1 mL
C) 1.5 mL
D) 2 mL

Question 28

A common source of error when calculating the amount to administer is

A) omitting units of measure.
B) cross-multiplying for fraction proportions.
C) multiplying means and extremes for ratio proportions.
D) using the formula method to calculate the amount to administer.

Question 29

Ordered: diphenhydramine 50 mg po qhs prn.
On hand: diphenhydramine 25 mg capsules.
The amount to administer is _______________.

Question 30

Ordered: Digoxin 0.125 mg po daily.
On hand: Digoxin 0.25 mg scored tablets.

The amount to administer is _______________.

Question 31

Ordered: Ferrous fumarate 300 mg po tid.
On hand: Ferrous fumarate 100 mg/5 mL.

The amount to administer is _______________.

Question 32

Refer to the label. Ordered: Vantin 200 mg po every 12 hours.
See label for dose on hand.

The amount to administer is _______________.

Question 33

Ordered Vantin 175 mg po q 12 hours
See label for dose on hand.


Amount to administer: _______________.

Question 34

Ordered: E.E.S. Granules 360 mg q6hr.

See label for dose on hand.

The amount to administer is _______________.

Question 35

Ordered: E.E.S. Granules 100 mg q6h.
See label for dose on hand.

The amount to administer is _______________.

Question 36

Ordered: Insulin Lispro 0.25 mL TID with meals.
Refer to label for drug on hand.

The desired dose is _______________.

Question 37

Ordered: EES Granules 2.5 mL q6h.
See label for dose on hand.

The desired dose is _______________.

Question 38

Ordered: amiodarone HCl 150 mg IV now.
On hand: See label.

You will need _______________ to administer this dose.

Question 39

Ordered: amiodarone HCl 75 mg IV now.
On hand: See label.

The amount to administer is _______________.

Question 40

Ordered: Ritalin HCl 15 mg.
On hand: See label.

The amount to administer is _______________.

Question 41

Ordered amoxicillin/clavulanate 875 mg every 12 hours.
See label for medication on hand (base dose on amount of amoxicillin available).

The amount to administer is _______________. (round to nearest tenth)

Question 42

Ordered amoxicillin/clavulanate 450 mg every 8 hours.
See label for medication on hand. (base dose on amount of amoxicillin available)

The amount to administer is _______________. (round to nearest hundredth)

Question 43

The dose on hand for this drug is _______________.

Question 44

What is the dosage unit?

Question 45

Ordered: Amicar 1,250 mg po q1 hour for 8 hours
On hand: See label.

The amount to administer is _______________.

Question 46

Ordered: Erythromycin 0.5 g po every 6 hours.
See label for available medication.

The dose to administer is _______________.

Question 47

The dosage strength for risperidone is _______________.

Question 48

Ordered Risperdal 2.5 mg po daily at bedtime
On hand: see label

The amount to administer is _______________.

Question 49

Ordered: Synthroid 125 mcg po daily.
On hand: see label.

The amount to administer is _______________.
If the answer results in a mixed number be sure to include a space between the whole number and the fraction. Example: 1 1/4 (read as one and one-fourth).

Question 50

Ordered: Phenobarbital gr ii po q8h.
On hand: Phenobarbital 60 mg per tablet

The amount to administer is _______________. (Use gr i = 60 mg)

Question 51

Ordered: Levothroid 0.168 mg.
See label for dosage on hand.

The amount to administer is _______________.

If the answer results in a mixed number be sure to include a space between the whole number and the fraction. Example: 1 1/4 (read as one and one-fourth).

Question 52

Ordered: Levothroid 0.056 mg.
See label for dosage on hand.
The amount to administer is _______________.

If the answer results in a mixed number be sure to include a space between the whole number and the fraction. Example: 1 1/4 (read as one and one-fourth).

Question 53

Order: Increase patient's current dose of citalopram (20 mg) po daily by 20 mg per day starting next dose.
See label for dose on hand.

The new amount to administer is _______________.

Question 54

Ordered: Citalopram 20 mg po daily.
See label for dosage on hand.

The amount to administer is _______________.

Question 55

Ordered: Procardia 30 mg TID.
See label for dosage on hand.

The total number of tablets needed per day is _______________.

Question 56

Ordered: Levothroid 0.224 mg po daily.
On hand: see label.

The amount to administer is ____________.

Question 57

Ordered: Furosemide 50 mg IV STAT
On hand: see label.

The amount to administer is ____________.

Question 58

Ordered: Furosemide 6.5 mL IV STAT
On hand: See label

The desired dose is _______________.

Question 59

Ordered: Demerol 75 mg IM q6h prn pain
On hand: Demerol 50 mg/mL


The amount to administer is _______________.

Question 60

Ordered: Flunisolide 500 mcg BID.
See label for medication available.

The amount to administer is _______________.

Question 61

Ordered: Heparin 1,000 units IV q12h.
On hand: Heparin 5,000 units/mL.

The amount to administer is _______________.

Question 62

Ordered Vistaril 50 mg PO qid
On hand: See label

The amount to administer is _______________.

Question 63

Ordered: Vistaril 75 mg PO qid
On hand: See label

The amount to administer is _______________.

A

Question 64

Ordered: Zofran 16 mg po q6h prn nausea.
On hand: Zofran 8 mg tablets.

The amount to administer is _______________.

Question 65

Ordered: Penicillin 400 mg po q6h.
On hand: Penicillin The amount to administer is _______________.

Question 66

Ordered: Klonopin 1.25 mg po tid.
On hand: Klonopin 0.5 mg scored tablets.

The amount to administer is _______________.

Question 67

Ordered: Ceftriaxone 0.75 g IVSS daily
On hand: See label

The amount to administer is _______________. (Round your answer to nearest tenth)

Question 68

Ordered: Ceftriaxone 0.25 g IVSS q12h
On hand: See label

The amount to administer is _______________. (Round your answer to nearest tenth)

Question 69

Ordered: Papaverine 45 mg IVSS q8h
On hand: Papaverine 30 mg/mL
The amount to administer is _______________.

Question 70

Ordered: Pegaspargase 525 international units IM q 14 days
On hand: Pegaspargase 750 international units/1 mL

The amount to administer is _______________.

Question 71

Ordered: Rabeprazole sodium 60 mg po daily
On hand: Rabeprazole sodium 20 mg tablets

The amount to administer is _______________.

Question 72

Ordered: Acyclovir 500 mg po q8h
On hand: Acyclovir oral suspension

The amount to administer is _______________.

Question 73

Ordered: Amantadine 200 mg po daily
On hand: Amantadine The amount to administer is _______________.

Question 74

Ordered: Benazepril hydrochloride 20 mg daily
On hand: Benazepril hydrochloride 10 mg/tablet

The amount to administer is _______________.

Question 75

Ordered: Nelfinavir mesylate 1.25 g po bid.
On hand: Nelfinavir mesylate 625 mg tablets.

The amount to administer is _______________.

Question 76

Teresa is working in the emergency room when a child is brought in with suspected mushroom poisoning. The physician orders atropine 350 mcg IV now. The prefilled atropine syringes on hand contain 5 mL of atropine 0.1 mg/mL. Teresa uses the fraction proportion method to calculate the amount to administer: . Her answer is 3,500 mL, and she knows that cannot be correct, so she consults her supervisor. Her supervisor redoes the math and calculates that the correct amount to administer is _______________.