A patient who weighs 91 kg receives a prescription for a continuous infusion of dopamine at 3 mcg/kg/min. The solution is labeled, “Dopamine 400 mg in 5% Dextrose injection 250 mL.” How many mL/hour should the nurse program the infusion pump to deliver?
(Enter numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["10.2"]
To determine the infusion rate in mL/hour for the dopamine solution:
-
Calculate the total dose per minute:
3 mcg/kg/min×91 kg=273 mcg/min3mcg/kg/min×91kg=273mcg/min. -
Convert mcg/min to mcg/hour:
273 mcg/min×60 min/hour=16,380 mcg/hour273mcg/min×60min/hour=16,380mcg/hour. -
Convert mcg to mg:
16,380 mcg÷1,000=16.38 mg/hour16,380mcg÷1,000=16.38mg/hour. -
Determine the concentration of the solution:
400 mg÷250 mL=1.6 mg/mL400mg÷250mL=1.6mg/mL. -
Calculate the mL/hour required:
16.38 mg/hour÷1.6 mg/mL=10.2375 mL/hour16.38mg/hour÷1.6mg/mL=10.2375mL/hour.
Rounded to the nearest tenth:
10.2 mL/hour.
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Related Questions
Correct Answer is ["15"]
Explanation
To find the answer, we can use the following steps:
- Calculate the infusion rate in mL/hour by dividing the volume of IV fluids by the time of infusion
- Calculate the infusion rate in mL/minute by dividing the infusion rate in mL/hour by 60
- Multiply the infusion rate in mL/minute by the drop factor in gtt/mL to get the infusion rate in gtt/minute
- Round the result to the nearest whole number
Using these steps, we get:
- (infusion rate in mL/hour) = (630) / (7) = 90 mL/hour
- (infusion rate in mL/minute) = (90) / (60) = 1.5 mL/minute
- (infusion rate in gtt/minute) = (1.5) x (10) = 15 gtt/minute
- (rounded infusion rate in gtt/minute) = 15
Therefore, the nurse should regulate the infusion to deliver 15 gtt/minute of IV fluids to the client.
Correct Answer is ["270"]
Explanation
To find the answer, we can use the following formula:
(remaining volume) = (initial volume) - (infused volume)
Substituting the given values, we get:
(remaining volume) = (440) - ((85 x 2))
Simplifying, we get:
(remaining volume) = (440) - (170)
(remaining volume) = 270
Therefore, the remaining volume to be infused is 270 mL.
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