The nurse mixes diphenhydramine 25 mg in a 100 mL bag of normal saline, which is to be administered over 30 minutes. The IV pump should be set to administer how many mL/hour? (Enter numeric value only.)

Calculation: Total volume = 100 mL Total time = 30 minutes Convert the total time from minutes to hours. Time in hours = 30 minutes / 60 minutes/hr = 0.5 hr Calculate the infusion rate in mL/hr. Rate (mL/hr) = Total Volume (mL) / Total Time (hr) = 100 mL / 0.5 hr = 200 mL/hr.