A nurse is preparing to administer 40 mEq of potassium chloride in 45% sodium chloride (NaCl) 500 mL IV to infuse 10 mEq/hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Total volume of the IV solution: 500 mL Total amount of potassium chloride to infuse: 40 mEq Infusion rate of potassium chloride: 10 mEq/hr First, we need to determine the total time the infusion will run based on the potassium chloride infusion rate: Total infusion time (hours)=Infusion rate (mEq/hr)Total mEq to infuse​ Total infusion time (hours)=10 mEq/hr40 mEq​=4 hours Now that we know the total volume (500 mL) needs to be infused over 4 hours, we can calculate the mL per hour: IV pump rate (mL/hr)=Total infusion time (hours)Total volume (mL)​ IV pump rate (mL/hr)=4 hours500 mL​=125 mL/hr Therefore, the nurse should set the IV pump to deliver 125 mL/hr.