IM injection volume practice problems

Tablet Dosage · 10 problems

Work each problem on paper first, rounding as the question says. Then open the answer to check it and see every step.

For study and exam practice, not for patient care. The orders in these problems are written for practice. In the clinic, follow the prescriber's order, your facility's protocols, and your pharmacy.

1. Problem 1

   The nurse is caring for a client who has a prescription for fentanyl citrate 60 mcg, IM. The nurse has fentanyl citrate 50 mcg/mL available. How many mL should the nurse administer? Record your answer using 1 decimal place.

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   Answer: 1.2 mL

   1. mL = desired dose ÷ concentration.
   2. 60 mcg ÷ 50 mcg/mL = 1.2 mL.
   3. 1.2 mL is exact, so no rounding is needed.

2. Problem 2

   The nurse is caring for a client who has a prescription for fentanyl citrate 80 mcg IM. The nurse has fentanyl citrate 50 mcg/mL available. How many mL should the nurse administer? Record your answer using 1 decimal place.

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   Answer: 1.6 mL

   1. mL = desired dose ÷ concentration.
   2. 80 mcg ÷ 50 mcg/mL = 1.6 mL.
   3. 1.6 mL is exact, so no rounding is needed.

3. Problem 3

   The nurse is caring for a client who has a prescription for haloperidol lactate 2 mg IM. The nurse has haloperidol lactate 5 mg/mL available. How many mL should the nurse administer? Record your answer using 1 decimal place.

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   Answer: 0.4 mL

   1. mL = desired dose ÷ concentration.
   2. 2 mg ÷ 5 mg/mL = 0.4 mL.
   3. 0.4 mL is exact, so no rounding is needed.

4. Problem 4

   The client is receiving IM analgesia for pain after a surgical dressing change. The prescription reads fentanyl citrate 50 mcg IM. The medication on hand is labeled fentanyl citrate 50 mcg/mL. How many mL should the nurse administer? Record your answer using a whole number.

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   Answer: 1 mL

   1. mL = desired dose ÷ concentration.
   2. 50 mcg ÷ 50 mcg/mL = 1 mL.
   3. 1 mL is exact, so no rounding is needed.

5. Problem 5

   The nurse is caring for a client who has a prescription for chlorpromazine 25 mg IM once. The nurse has chlorpromazine 25 mg/mL available. How many mL should the nurse administer? Record your answer using a whole number.

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   Answer: 1 mL

   1. mL = desired dose ÷ concentration.
   2. 25 mg ÷ 25 mg/mL = 1 mL.
   3. 1 mL is exact, so no rounding is needed.

6. Problem 6

   The nurse is caring for a client who has a prescription for fentanyl citrate 25 mcg IM. The nurse has fentanyl citrate 50 mcg/mL available. How many mL should the nurse administer? Record your answer using 1 decimal place.

   Show answer and steps

   Answer: 0.5 mL

   1. mL = desired dose ÷ concentration.
   2. 25 mcg ÷ 50 mcg/mL = 0.5 mL.
   3. 0.5 mL is exact, so no rounding is needed.

7. Problem 7

   The nurse is caring for a client who has a prescription for metoclopramide 10 mg, IM. The nurse has metoclopramide 5 mg/mL available. How many mL should the nurse administer? Record your answer using a whole number.

   Show answer and steps

   Answer: 2 mL

   1. mL = desired dose ÷ concentration.
   2. 10 mg ÷ 5 mg/mL = 2 mL.
   3. 2 mL is exact, so no rounding is needed.

8. Problem 8

   Order: hydralazine 20 mg IM. Available: hydralazine 20 mg/mL. How many mL should the nurse administer? Record your answer using a whole number.

   Show answer and steps

   Answer: 1 mL

   1. mL = desired dose ÷ concentration.
   2. 20 mg ÷ 20 mg/mL = 1 mL.
   3. 1 mL is exact, so no rounding is needed.

9. Problem 9

   The nurse is caring for a client who has a prescription for fentanyl citrate 30 mcg, IM. The nurse has fentanyl citrate 50 mcg/mL available. How many mL should the nurse administer? Record your answer using 1 decimal place.

   Show answer and steps

   Answer: 0.6 mL

   1. mL = desired dose ÷ concentration.
   2. 30 mcg ÷ 50 mcg/mL = 0.6 mL.
   3. 0.6 mL is exact, so no rounding is needed.

10. Problem 10

    Order: chlorpromazine 12.5 mg IM once. Available: chlorpromazine 25 mg/mL. How many mL should the nurse administer? Record your answer using 1 decimal place.

    Show answer and steps

    Answer: 0.5 mL

    1. mL = desired dose ÷ concentration.
    2. 12.5 mg ÷ 25 mg/mL = 0.5 mL.
    3. 0.5 mL is exact, so no rounding is needed.

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