The order from a provider is: Phenergan (Promethazine) 50 mg in 30 mL of d5W IV q8h to be administered over 20 min PRN for nausea. What is the rate on the Infusion pump?
The Correct Answer is ["90"]
Step-by-Step Calculation
Understanding the Problem
We need to administer 30 mL of Phenergan in D5W over 20 minutes.
We need to find the infusion rate in mL/hour.
Calculations
Convert minutes to hours:
20 minutes = 20/60 hours = 1/3 hour
Calculate the infusion rate:
Infusion rate (mL/hour) = Total volume (mL) / Time (hours)
Infusion rate = 30 mL / (1/3 hour) = 30 mL X 3 = 90 mL/hour
The infusion pump rate should be set to 90 mL/hour.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["3"]
Explanation
Step-by-Step Calculation
Understanding the Problem
Desired Pitocin dose: 5 milliunits/min
Pitocin concentration: 20 units in 200 mL
We need to find the infusion rate in mL/hour.
Calculations
Convert milliunits to units:
5 milliunits/min = 0.005 units/min
Calculate units per hour:
0.005 units/min X 60 min/hour = 0.3 units/hour
Calculate the concentration of Pitocin:
Pitocin concentration = Total units / Total volume
Pitocin concentration = 20 units / 200 mL = 0.1 units/mL
Calculate the infusion rate:
Infusion rate (mL/hour) = Desired Pitocin dose (units/hour) / Pitocin concentration (units/mL)
Infusion rate = 0.3 units/hour / 0.1 units/mL = 3 mL/hour
The infusion pump rate should be set to 3 mL/hour.
Correct Answer is ["25"]
Explanation
Understanding the Problem
We need to administer D5W at a rate of 25 mL/hour.
The drip factor is 60 gtt/mL.
We need to find the drip rate in gtt/min.
Calculations
Convert hours to minutes:
1 hour = 60 minutes
Calculate the infusion rate in mL/min:
25 mL/hour = 25 mL / 60 minutes = 0.4167 mL/min
Calculate the drip rate:
Drip rate (gtt/min) = Infusion rate (mL/min) X Drop factor (gtt/mL)
Drip rate = 0.4167 mL/min X 60 gtt/mL = 25 gtt/min
The drip rate is 25 gtt/min.
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