RN VATI Pharmacology S 2019 | Nurselytic

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RN VATI Pharmacology S 2019 Questions

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Question 1 of 5

A nurse is preparing to administer dopamine 5 mcg/kg/min by continuous IV infusion to a client who weighs 220 lb. Available is 400 mg of dopamine in 250 mL of 0.9% sodium chloride. The nurse should set the IV pump to deliver how many mL/hr?

Correct Answer: A

Rationale: The correct answer is A: 18.8 mL/hr.
To calculate the rate of dopamine infusion, we first need to convert the client's weight from pounds to kilograms by dividing it by 2.2 (220 lb / 2.2 = 100 kg). Next, we calculate the total daily dose of dopamine by multiplying the weight in kg by the ordered dose (100 kg x 5 mcg/kg/min x 60 min/hr x 24 hr/day = 720,000 mcg/day).
Then, we convert the total daily dose to mL/hr by dividing it by the concentration of dopamine in the IV solution (720,000 mcg/day / 400 mg/250 mL x 1000 mcg/mg = 18.8 mL/hr). This calculation ensures the correct dosage is administered to the client. Other choices are incorrect as they do not follow the necessary conversion steps or include miscalculations in the dosage determination.

Question 2 of 5

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Question 5 of 5

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