The pharmacy delivers an IV infusion of sodium chloride 100 mL with regular insulin 50 units for a client in diabetic ketoacidosis. The prescription rate is 10 units/hour. How many mL/hour should the nurse program the infusion pump? (Enter numeric value only.)

First, we need to determine the concentration of insulin in the IV bag. The bag contains 50 units of insulin in 100 mL, so the concentration is 50 units/100 mL = 0.5 units/mL. The prescription rate is 10 units/hour. At a concentration of 0.5 units/mL, this dosage is equivalent to 10 units/hour ÷ 0.5 units/mL = 20 mL/hour. So, the nurse should program the infusion pump to deliver 20 mL/hour.