Mathematics Review and Introduction to Dosage Calculation

Understanding Pharmacology Essentials for Medication Safety

Nursing
16
Questions
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True/False
6
Choices
10
Essay
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Questions

Q1
Free

What is the most important consideration when using a calculator for drug dosages?

Multiple Choice
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A) Always check the answers with a pharmacist.
B) Ensure the numbers are entered in the correct order.
C) Work the problem by hand and then check all work using the computer.
D) Calculate the answer with the computer and then check the answer by working the problem by hand.
Answer:
B) Ensure the numbers are entered in the correct order.

Explanation:
Remember that math problems are punched into the calculator just like they are written or just like you would say them out loud. For example, 24 12 is punched in as 2, 4, , 1, 2 = answer. If you punch in either of the numbers backwards (e.g., 4, 2, 1, 2 or 2, 4, , 2, 1) the answer will be wrong.
Q2
Free

What specific safety technique is always used when calculating an insulin dose?

Multiple Choice
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A) Use a calculator and never calculate the dose by hand.
B) Calculate the dose by hand and never use a calculator.
C) Have another health care professional check the dose.
D) Wear sterile gloves to administer the calculated dose.
Answer:
C) Have another health care professional check the dose.

Explanation:
Insulin is a high alert (PINCH) drug that can cause serious damage if the wrong dose is administered. Always have another health care professional double check the dose you calculate by independently re-calculating the dose and comparing it to the dose you calculated.
Q3
Free

What is the best definition of a fraction?

Multiple Choice
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A) Part of a whole number obtained by dividing one number by a larger number
B) The answer obtained when one number divided another number is always an even number
C) The smallest unit or part of a number that can be obtained by dividing one number by itself
D) The dividing point between whole numbers and parts of numbers in a system based on units of ten
Answer:
A) Part of a whole number obtained by dividing one number by a larger number

Explanation:
A fraction is always a part of a whole number. A proper faction is always less than a single whole number.
Q4

In the equation 2X = , which element is the numerator?

Multiple Choice
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A) 2
B) 4
C) 6
D) X
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Q5

What is the lowest common denominator for the fraction series of 10/15, 9/27, 10/30, 34/51?

Multiple Choice
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A) 3
B) 5
C) 6
D) 10
Answer:

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Q6

What is the correct response when , , and 2 are added together and then reduced to the lowest terms?

Multiple Choice
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A) 5
B) 2
C) 3
D) 8
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Q7

A patient is prescribed aspirin 650 mg orally. The aspirin form on hand is 325 mg/tablet. How many tablets does the nurse give this patient? _____ tablet(s)

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Q8

A patient is prescribed 160 mg of acetaminophen (Tylenol). The drug on hand is acetaminophen . How many milliliters does the nurse administer? _____ mL

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Q9

A patient is prescribed 0.0625 mg of digoxin (Lanoxin). The drug on hand is digoxin 0.05 mg/mL. How many milliliters does the nurse administer? _____ mL

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Q10

A patient is prescribed 750 mg of amoxicillin (Amoxil). The drug on hand is amoxicillin . How many milliliters does the nurse administer? _____ mL

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Q11

A pediatric patient is prescribed 20 mg of acetaminophen (Tylenol). The drug on hand is acetaminophen . How many milliliters does the nurse administer? _____ mL

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Q12

A pediatric patient is prescribed 0.004 mg of digoxin (Lanoxin) orally as a one-time dose now. The drug on hand is digoxin 0.05 mg/mL. How many drops does the nurse administer? _____ gtt

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Q13

An infant is prescribed 50 mg of amoxicillin (Amoxil). The drug on hand is amoxicillin . How many milliliters does the nurse administer? _____ mL

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Q14

A patient is prescribed 4 mg of morphine IV. The drug on hand is morphine 10 mg in a 1-mL syringe. How many milliliters does the nurse administer? _____ mL

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Q15

A patient is prescribed 25 mg of meperidine (Demerol) IV. The drug on hand is meperidine 100 mg/mL. How many milliliters does the nurse administer? _____ mL

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Q16

A patient is prescribed 2000 units of heparin subcutaneously. The drug on hand is heparin 5000 units/mL. How many milliliters does the nurse administer? _____ mL

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