A nurse is preparing to administer vancomycin 1 g in 250 mL 0.9% sodium chloride by intermittent IV bolus over 90 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.)

Total volume to be infused = 250 mL. Infusion time in minutes = 90 min. Convert the infusion time from minutes to hours. Infusion time in hours = 90 min / 60 min/hr = 1.5 hr. Calculate the infusion rate in mL per hour. Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hr) = 250 mL / 1.5 hr = 166.666... mL/hr. Round the answer to the nearest whole number. = 167 mL/hr.