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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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Related Questions

Correct Answer is ["1.5"]

Explanation

To calculate the amount of phenobarbital to administer per dose after the initial dose, the nurse should use the following formula:

mL = (dose in mg) / (concentration in mg/mL)

The dose in mg is 200 mg, and the concentration in mg/mL is 130 mg/mL. Plugging these values into the formula, we get:

mL = (200 mg) / (130 mg/mL)

mL = 1.5385

Rounding to the nearest tenth, the nurse should administer 1.5 mL per dose after the initial dose.

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.

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