A nurse is preparing to administer 0.9% sodium chloride 100 mL IV to infuse over 15 min. 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.)

To calculate the infusion rate in mL/hr, you can use the formula: (Total Volume in mL / Time in hours) x 60. For an infusion of 100 mL over 15 minutes, you would first convert the time to hours, which is 15 minutes divided by 60, equaling 0.25 hours. Then, you divide the total volume by the time in hours: 100 mL / 0.25 hours equals 400. Finally, multiply by 60 to convert to an hourly rate: 400 x 60 equals 24,000 mL/hr. However, this number needs to be rounded to the nearest whole number, without a trailing zero. Therefore, the IV pump should be set to deliver 400 mL/hr.