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 ["1"]
Explanation
Convert the client's weight from pounds to kilograms:
Weight (kg) = Weight (pounds) / 2.2 pounds/kg
= 176 pounds / 2.2 pounds/kg
= 80 kg
Calculate the prescribed dose in milligrams:
Dose (mg) = Prescribed dose (mg/kg) x Client's weight (kg)
= 0.05 mg/kg x 80 kg
= 4 mg
Calculate the volume to administer in mL:
Volume to administer (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 4 mg / 4 mg/mL
= 1 mL
Correct Answer is ["12.5"]
Explanation
Desired dose = 150 mg
Available concentration = 60 mg / 5 mL
Calculate the volume to administer:
Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL)
= 150 mg / (60 mg / 5 mL)
= 150 mg / 12 mg/mL
= 12.5 mL
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