MACE Dosage Calculations & Measurement Accuracy 3 — Questions and Answers
Question 1: How many milliliters are in 2 fluid ounces?
- 30 mL
- 45 mL
- 60 mL (Correct answer)
- 90 mL
Correct answer: 60 mL
1 fluid ounce = 30 mL, so 2 fluid ounces = 60 mL.
Question 2: A resident weighs 154 pounds. What is their weight in kilograms?
- 50 kg
- 60 kg
- 70 kg (Correct answer)
- 80 kg
Correct answer: 70 kg
154 pounds ÷ 2.2 = 70 kg.
Question 3: The order reads: give 1/2 teaspoon of liquid acetaminophen. How many mL should be measured?
- 1.5 mL
- 2 mL
- 2.5 mL (Correct answer)
- 5 mL
Correct answer: 2.5 mL
1 teaspoon = 5 mL; 1/2 teaspoon = 2.5 mL.
Question 4: A medication vial contains 10 mg/mL. The order is for 25 mg. How many mL should be drawn up?
- 1.5 mL
- 2 mL
- 2.5 mL (Correct answer)
- 3 mL
Correct answer: 2.5 mL
25 mg ÷ 10 mg/mL = 2.5 mL.
Question 5: Which of the following is the most appropriate action when a calculated dose seems unusually high?
- Administer the dose as calculated
- Double the dose to be sure
- Withhold the dose and notify the nurse immediately (Correct answer)
- Give half the dose and document it
Correct answer: Withhold the dose and notify the nurse immediately
An unusually high calculated dose should be reported to a nurse before administration to prevent a medication error.
Question 6: A medication label states 125 mg/5 mL. The order is for 250 mg. How many mL should be administered?
- 5 mL
- 8 mL
- 10 mL (Correct answer)
- 12.5 mL
Correct answer: 10 mL
250 mg ÷ 125 mg × 5 mL = 10 mL.
Question 7: A resident needs 1,000 mg of a medication. The available tablets are 0.5 g each. How many tablets are needed?
- 1 tablet
- 2 tablets (Correct answer)
- 4 tablets
- 5 tablets
Correct answer: 2 tablets
0.5 g = 500 mg; 1,000 mg ÷ 500 mg = 2 tablets.
MACE Dosage Calculations & Measurement Accuracy 3
How many milliliters are in 2 fluid ounces?