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A nurse is preparing to administer diltiazem IV 0.25 mg/kg IV bolus given over 2 min to a client who has atrial fibrillation and weighs 154 lb. Available is diltiazem IV injection 25 mg/5 mL. How many mL should the nurse administer?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Explanation

The Correct Answer is ["3.5"]

  1. Convert the client's weight from pounds to kilograms:

    • 154 lb ÷ 2.2 lb/kg = 70 kg

  2. Calculate the total dose required:

    • 0.25 mg/kg × 70 kg = 17.5 mg

  3. Determine the volume to administer:

    • Given concentration: 5 mg/mL
    • 17.5 mg ÷ 5 mg/mL = 3.5 mL

  4. Rounding to the nearest tenth:

    • The answer remains 3.5 mL

So the nurse should administer 3.5 mL of diltiazem IV injection.

which is 17.5 mg / 5 mg/mL = 3.5 mL. Rounding to the nearest tenth, the nurse  should administer 3.5 mL of diltiazem IV injection.


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Related Questions

Correct Answer is ["1"]

Explanation

To answer this question, you need to convert the dosage of fentanyl from micrograms (mcg) to milligrams (mg). One milligram is equal to 1000 micrograms, so 50 mcg is equal to 0.05 mg. Then, you need to use the formula D/H x Q, where D is the desired dose, H is the dose on hand, and Q is the quantity. In this case, D is 0.05 mg, H is 0.05 mg/mL, and Q is the volume in milliliters. Plugging these values into the formula, you get:

0.05 mg / 0.05 mg/mL x Q

Q = 1 mL

Therefore, the nurse should administer 1 mL of fentanyl per dose.

Correct Answer is ["0.3"]

Explanation

To calculate the dose of cefazolin for a neonate, first multiply the weight by the dosage per day: 5 kg x 40 mg/kg/day = 200 mg/day. Then divide by the number of doses per day: 200 mg/day / 2 doses/day = 100 mg/dose. Next, use the formula D/H x Q to find the volume to administer, where D is the dose, H is the strength of the solution, and Q is the quantity of the solution. Plug in the values: 100 mg / 330 mg/mL x 1 mL = 0.3 mL. Round to the nearest tenth: 0.3 mL. Therefore, the nurse should administer 0.3 mL of cefazolin per dose.

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