A nurse is preparing to administer dobutamine 10 mcg/kg/min by continuous IV infusion to a client who weighs 110 lb. Available is dobutamine 250 mg in 250 mL dextrose 5% in water. The nurse should set the IV pump to deliver how many mL/hr?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["30"]

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.

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Free Nursing Study Resources

Correct Answer is ["14"]

Explanation

To answer this question, the nurse needs to perform the following steps:

Convert the client's weight from pounds to kilograms by dividing it by 2.2. 154 lb / 2.2 = 70 kg.

Multiply the client's weight by the loading dose of phenytoin to get the total dose in milligrams. 70 kg x 10 mg/kg = 700 mg.

Divide the total dose by the concentration of phenytoin to get the volume in milliliters. 700 mg / 50 mg/mL = 14 mL.

Round the volume to the nearest whole number. The nurse should administer 14 mL of phenytoin by IV bolus.

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

A nurse is preparing to administer a loading dose of phenytoin 10 mg/kg by IV bolus to a client who weighs 154 lb. Available is phenytoin50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies t use a trailing zero.)

Correct Answer is ["14"]

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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A nurse is preparing to administer cefazolin 40 mg/kg/day IV bolus divided in equal doses every 12 hr to a neonate who weighs 5 kg Available is cefazolin injection 330 mg/mL. How many mL should the nurse administer per dose?

A nurse is preparing to administer verapamil 10 mg IV bolus. Available is verapamil injection 5 mg/2 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.)