A client weighing 198 lbs is prescribed Dopamine hydrochloride IV at 2 mcg/kg/minute to promote renal perfusion.
The pharmacy provides a pre-mixed bag of dopamine containing 400 mg in 250 mL dextrose 5% in water (D5W). An IV pump that provides a precision infusion rate to a tenth of a mL is available.
How many mL/hour should the IV pump be set to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["6.8"]
Step 1: Convert the client’s weight from lbs to kg. 1 kg is approximately 2.2 lbs. So, 198 lbs ÷
2.2 = 90 kg (rounded to the nearest whole number).
Step 2: Calculate the total mcg of Dopamine needed per minute. The prescription is for 2 mcg/kg/minute. So, 90 kg × 2 mcg/kg/minute = 180 mcg/minute.
Step 3: Convert the total mcg of Dopamine in the bag to mcg/mL. The bag contains 400 mg of Dopamine in 250 mL. 1 mg is equal to 1000 mcg. So, 400 mg × 1000 = 400,000 mcg. Therefore, the concentration is 400,000 mcg ÷ 250 mL = 1600 mcg/mL.
Step 4: Calculate the mL of Dopamine needed per minute. So, 180 mcg/minute ÷ 1600 mcg/mL
= 0.1125 mL/minute.
Step 5: Convert mL/minute to mL/hour. There are 60 minutes in an hour. So, 0.1125 mL/minute × 60 = 6.75 mL/hour. The IV pump should be set to deliver 6.8 mL/hour (rounded to the nearest tenth).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D"]
Explanation
Choice A rationale
Orange juice is a clear liquid and is allowed in the Mormon faith.
Choice B rationale
Hot chocolate is not a clear liquid and is not typically consumed by individuals who follow Mormon beliefs due to its caffeine content.
Choice C rationale
Apple juice is a clear liquid and is allowed in the Mormon faith.
Choice D rationale
Chicken broth is a clear liquid and is allowed in the Mormon faith.
Choice E rationale
Black coffee is not a clear liquid and is not typically consumed by individuals who follow Mormon beliefs due to its caffeine content.
Correct Answer is C
Explanation
Choice A rationale
While seizure precautions are important for clients receiving certain medications or with certain conditions, they are not typically necessary for clients receiving dopamine. Dopamine, an adrenergic agonist, does not typically increase the risk of seizures.
Choice B rationale
Assessing pupillary response to light hourly is not typically necessary for clients receiving dopamine. Dopamine does not typically affect pupillary response.
Choice C rationale
Measuring urinary output every hour is an important intervention for a client receiving dopamine. Dopamine at low to moderate doses can dilate renal blood vessels, which can increase urine output. Therefore, monitoring urinary output can help assess the effectiveness of the medication and the client’s renal perfusion.
Choice D rationale
While it is important to monitor electrolyte levels in clients receiving certain medications, frequent monitoring of serum potassium is not typically necessary for clients receiving dopamine. Dopamine does not typically affect serum potassium levels.
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