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.)

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