The order from a providers is: Start a magnesium drip 3 g per hour. The pharmacy provides you with NS 1 Liter with 40 g of magnesium sulfate added. What is the rate on the Infusion pump?
The Correct Answer is ["75"]
Understanding the Problem
Desired magnesium sulfate dose: 3 g/hour
Magnesium sulfate concentration: 40 g in 1000 mL NS
We need to find the infusion rate in mL/hour.
Calculations
Calculate magnesium sulfate concentration:
Concentration = Total grams / Total volume
Concentration = 40 g / 1000 mL = 0.04 g/mL
Calculate infusion rate:
Infusion rate (mL/hour) = Desired magnesium sulfate dose (g/hour) / Concentration (g/mL)
Infusion rate = 3 g/hour / 0.04 g/mL = 75 mL/hour
The infusion pump rate should be set to 75 mL/hour.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["10"]
Explanation
Step-by-Step Calculation
Understanding the Problem
Desired heparin dose: 1600 units/hour
Heparin concentration: 40,000 units in 250 mL NS
We need to find the infusion rate in mL/hour.
Calculations
Calculate heparin concentration:
Heparin concentration = Total units / Total volume
Heparin concentration = 40,000 units / 250 mL = 160 units/mL
Calculate infusion rate:
Infusion rate (mL/hour) = Desired heparin dose (units/hour) / Heparin concentration (units/mL)
Infusion rate = 1600 units/hour / 160 units/mL = 10 mL/hour
The infusion pump rate should be set to 10 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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