A client is currently receiving an IV infusion labeled, "5% Dextrose Injection 500 ml with Heparin Sodium 25,000 Units" at 14 mL/hour per pump. A prescription is received to change the rate of the IV infusion to heparin 1,000 units/hour. How many mL/hour should the nurse program the infusion pump? (Enter numeric value only.)
The Correct Answer is ["20"]
Determine the concentration of heparin in the IV solution:
Heparin concentration (units/mL) = Total heparin units / Total volume of solution (mL)
= 25,000 units / 500 mL
= 50 units/mL
Calculate the new infusion rate in mL/hour based on the new prescribed heparin dose:
New infusion rate (mL/hour) = Desired heparin dose (units/hour) / Heparin concentration (units/mL)
= 1,000 units/hour / 50 units/mL
= 20 mL/hour
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.8"]
Explanation
Desired dose in milligrams = 300 mg
Convert the available concentration to mg/mL:
Available concentration = 1 gram / 2.5 mL
= 1000 mg / 2.5 mL
= 400 mg/mL
Calculate the volume to administer in mL:
Volume to administer (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 300 mg / 400 mg/mL
= 0.75 mL
Round to the nearest tenth:
Rounded volume = 0.8 mL
Correct Answer is ["45"]
Explanation
Infusion rate in mL/hour = 45 mL/hour
Microdrip drop factor = 60 microdrops/mL
Calculate the infusion rate in microdrops per minute:
Infusion rate (microdrops/minute) = Infusion rate (mL/hour) x Microdrip drop factor (microdrops/mL) / 60 minutes/hour
= 45 mL/hour x 60 microdrops/mL / 60 minutes/hour
= 45 microdrops/minute
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