Practice Mode Assessment

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No.

1 : A nurse is preparing to administer potassium chloride 20 mEq suspension PO daily. The amount available is potassium chloride suspension 10 mEq/mL How many mL should the nurse administer? (Round the answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailingzero

Hint : Divide ordered dose by the available concentration.

Correct Answers:

Rationale :

20 mEq ÷ 10 mEq/mL = 2 mL

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2 : A nurse is preparing to administer 1 mg vitamin K to a newborn. The medication is available in 1 mg/O.5 mL. How much should the nurse administer? (Round to the nearest tenth. Use a leading zero when applicable. Do not use a trailing zero.)

Hint : If strength is 1 mg per 0.5 mL, and the dose is 1 mg, the volume is 0.5 mL.

Correct Answers:

Rationale :

1 mg ÷ (1 mg/0.5 mL) = 0.5 mL

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3 : A nurse is caring for a client who has diabetes and a new prescription for 14 units of regular insulin and 28 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units that the nurse should prepare in the insulin syringe?

42 units

28 units

14 units

32 units

Hint : Add both types of insulin to get the total dose for the syringe.

Correct Answers:

42 units

Rationale :

14 + 28 = 42 units total insulin

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4 : A nurse is providing discharge teaching to the parent of a child who is prescribed diphenhydramine 25 mg elixir every 4 hr as needed. The amount available is diphenhydramine elixir 12.5 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer (mL) : 10

Hint : Use a two-step method: divide dose by strength, then multiply by volume.

Correct Answers:

Rationale :

25 mg ÷ 12.5 mg = 2 2 × 5 mL = 10 mL

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5 : A nurse is preparing to administer desipramine 150 mg PO daily to a client to treat diabetic neuropathy. The amount available is desipramine 100 mg/tablet. How many tablets should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Hint : Divide the dose by strength per tablet.

Correct Answers:

Rationale :

150 mg ÷ 100 mg = 1.5 tablets

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6 : A nurse is preparing an in-service program about preventing medication errors when transcribing a prescription. The nurse is using a dosage example of two tenths of a milligram. Which of the following examples should the nurse use to show appropriate transcription of this dosage?

0.20 mg

2.0 mg

2 mg

0.2 mg

None

Hint : Leading zero = safe; trailing zero = unsafe.

Correct Answers:

0.2 mg

Rationale :

Correct format uses a leading zero and no trailing zero.

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7 : A provider prescribes dextrose 5% in water IV to infuse at 100 mL/hr. The drop factor on the manual IV tubing Is 60 gtt/mL. The nurse should set the IV flow rate to deliver how many gtt/min, (Round the answer to the nearest whole number.)

Hint : If drop factor is 60, then mL/hr = gtt/min.

Correct Answers:

Rationale :

(100 mL/hr × 60 gtt/mL) ÷ 60 = 100 gtt/min

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8 : A nurse is preparing to administer chlordiazepoxide 50 mg PO every 8 hr to a client. The amount available is chlordiazepoxide 25 mg/capsule. How many capsules should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Hint : Straight division of dose by capsule strength.

Correct Answers:

Rationale :

50 mg ÷ 25 mg = 2 capsules

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9 : A nurse is preparing to administer valproic acid 400 tog PO bid for migraine headaches. Available is valproic acid 250 mg/5mL. How many ml should the nurse administer per dose, (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Hint : Use cross-multiplication for liquid meds.

Correct Answers:

Rationale :

Set up a proportion: 250 mg : 5 mL = 400 mg : x (400 × 5) ÷ 250 = 8 mL

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10 : A nurse is caring for a I-month-old infant who weighs 3500g and is prescribed a dose of cephazolin 50 mg/kg by intermittent IV bolus three times daily. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do 3 m anot use a trailing zero.)

Hint : Convert grams to kilograms before calculating the dose.

Correct Answers:

Rationale :

3500 g = 3.5 kg 3.5 kg × 50 mg/kg = 175 mg

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Total Questions: 10

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RN Dosage Calculation Proctored Fall 2024

No.

2 : A nurse is preparing to administer 1 mg vitamin K to a newborn. The medication is available in 1 mg/O.5 mL. How much should the nurse administer? (Round to the nearest tenth. Use a leading zero when applicable. Do not use a trailing zero.)

3 : A nurse is caring for a client who has diabetes and a new prescription for 14 units of regular insulin and 28 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units that the nurse should prepare in the insulin syringe?

6 : A nurse is preparing an in-service program about preventing medication errors when transcribing a prescription. The nurse is using a dosage example of two tenths of a milligram. Which of the following examples should the nurse use to show appropriate transcription of this dosage?

7 : A provider prescribes dextrose 5% in water IV to infuse at 100 mL/hr. The drop factor on the manual IV tubing Is 60 gtt/mL. The nurse should set the IV flow rate to deliver how many gtt/min, (Round the answer to the nearest whole number.)

9 : A nurse is preparing to administer valproic acid 400 tog PO bid for migraine headaches. Available is valproic acid 250 mg/5mL. How many ml should the nurse administer per dose, (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

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