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A nurse is preparing to administer dobutamine 5mcg/kg/min by continuous IV infusion to client who weigh 250 lb. Available is dobutamine 250 mg in dextrose 5% in water 250 mL. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to nearest whole number. Use a leading zero if it applies, do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["34"]

Convert the Client's Weight from Pounds to Kilograms:

1 kg = 2.205 lbs

Weight in kg = 250 lbs / 2.205 lbs/kg

Weight in kg ≈ 113.38 kg

Calculate the Dobutamine Dose in mcg/min:

Dose = 5 mcg/kg/min x 113.38 kg

Dose ≈ 566.9 mcg/min

Convert the Dobutamine Dose from mcg/min to mg/min:

1 mg = 1000 mcg

Dose in mg/min = 566.9 mcg/min / 1000 mcg/mg

Dose in mg/min ≈ 0.5669 mg/min

Calculate the Dobutamine Dose in mg/hr:

Dose in mg/hr = 0.5669 mg/min x 60 min/hr

Dose in mg/hr ≈ 34.014 mg/hr

Calculate the Infusion Rate in mL/hr:

Available concentration = 250 mg / 250 mL = 1 mg/mL

Infusion Rate (mL/hr) = Dose in mg/hr / Concentration (mg/mL)

Infusion Rate (mL/hr) = 34.014 mg/hr / 1 mg/mL

Infusion Rate (mL/hr) ≈ 34.014 mL/hr

Round to the Nearest Whole Number:

34 mL/hr

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Free Nursing Study Resources

Correct Answer is ["4"]

Explanation

Identify the Desired Dose and Available Concentration:

Desired Dose: 10 mg of verapamil

Available Concentration: 5 mg/2 mL

Simplify the Available Concentration:

To make the calculation easier, find the concentration per 1 mL: 5 mg / 2 mL = 2.5 mg/mL (This means there are 2.5 mg of verapamil in every 1 mL of solution)

Set up the Calculation:

We need to find the volume (in mL) that contains the desired dose of 10 mg.

We can use the following formula:

Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)

Plug in the Values and Calculate:

Volume (mL) = 10 mg / 2.5 mg/mL

Volume (mL) = 4 mL

Round to the Nearest Whole Number (if necessary):

4 mL

A. The medication can be used for up to 14 days after reconstitution B. The medication should be reconstituted with 0.9% sodium chloride solution C. The medication can be used for IV administration D. The vial contains a single dose.

Correct Answer is C

Explanation

A. The medication can be used for up to 14 days after reconstitution: The label states that the reconstituted solution should be used within 48 hours and discarded afterward, making this option incorrect.

B. The medication should be reconstituted with 0.9% sodium chloride solution: The label specifies that the medication should be reconstituted with bacteriostatic water for injection USP with benzyl alcohol, not 0.9% sodium chloride solution.

C. The medication can be used for IV administration: The label states that the medication is for intramuscular (IM) or intravenous (IV) use, confirming that IV administration is appropriate.

D. The vial contains a single dose: The label indicates that this is a multiple-dose vial, meaning it can be used for more than one administration.

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer verapamil 10 mg IV bolus. Available is verapamil injection 5 mg/2 mL. How many should the nurse administer? (Round the answer to whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["4"]

Explanation

A nurse is preparing to administer methylprednisolene. Which of the following information should the nurse identify as correct according to the medication label?

Correct Answer is C

Explanation

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A nurse is preparing to administer potassium glucose 40 mEq PO. Available is potassium gluconate liquid 20 mEq/15 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)