A nurse is preparing to administer dexamethasone 0.5 mg/kg/day IM to divide equally every 6 hr to a client who weighs 132 lb. Available is dexamethasone 4 mg/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.)

Answer and Explanation

The Correct Answer is ["1.9"]

To calculate the dose of dexamethasone, we need to convert the client's weight from pounds to kilograms. One pound is equal to 0.454 kg, so 132 lb is equal to 132 x 0.454 = 59.928 kg. The prescribed dose is 0.5 mg/kg/day, so the daily dose is 0.5 x 59.928 = 29.964 mg. This dose is divided equally every 6 hours, so the dose per administration is 29.964 / 4 = 7.491 mg. The concentration of the drug is 4 mg/mL, so the volume per administration is 7.491 / 4 = 1.873 mL. Rounded to the nearest tenth, the nurse should administer 1.9 mL per dose.

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Correct Answer is ["30"]

Explanation

To solve this problem, the nurse needs to convert the client's weight from pounds to kilograms, and then use the formula:

mL/hr = (mcg/kg/min x kg x 60 min) / (mg/mL x 1000 mcg/mg)

The client's weight in kilograms is:

110 lb / 2.2 lb/kg = 50 kg

The concentration of dobutamine in mg/mL is:

250 mg / 250 mL = 1 mg/mL

Plugging these values into the formula, we get:

mL/hr = (10 mcg/kg/min x 50 kg x 60 min) / (1 mg/mL x 1000 mcg/mg) mL/hr = (30,000 mcg/min) / (1000 mcg/mg)

mL/hr = 30 mg/min

mL/hr = 30 mL/hr

Therefore, the nurse should set the IV pump to deliver 30 mL/hr.

Correct Answer is ["20.1"]

Explanation

To calculate the dosage of methylprednisolone, first convert the client's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds.

The client weighs 184 pounds, which is approximately 83.64 kilograms (184 lb / 2.2).

Next, multiply the client's weight in kilograms by the dosage prescribed, which is 30 mg/kg.

This results in a total dosage of 2509.2 mg (83.64 kg * 30 mg/kg).

Finally, divide the total dosage by the concentration of the available medication to find out how many milliliters to administer.

The available medication is 125 mg/mL,

so you would administer 20.07 mL (2509.2 mg / 125 mg/mL).

Rounded to the nearest tenth, the nurse should administer 20.1 mL.

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Naxlex Comprehensive Predictor Exams

Correct Answer is ["30"]

Explanation

A nurse is preparing to administer methylprednisolone 30 mg/kg via IV bolus to a client who weighs 184 lb. Available is methylprednisolone 125 mg/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.)

Correct Answer is ["20.1"]

Explanation

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