A nurse is preparing to administer oxytocin to a client at a rate of 7 milliunits/min. Available is 10 units of oxytocin in lactated Ringer's 1,000 mL. 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.)

Convert units to milliunits: 10 units × 1000 milliunits/unit = 10,000 milliunits Calculate the concentration of the oxytocin solution: 10,000 milliunits / 1000 mL = 10 milliunits/mL Calculate the infusion rate in mL/min: Desired rate: 7 milliunits/min Concentration: 10 milliunits/mL Infusion rate: 7 milliunits/min / 10 milliunits/mL = 0.7 mL/min Convert mL/min to mL/hr: Infusion rate: 0.7 mL/min ×60 min/hr = 42 mL/hr Therefore, the nurse should set the IV pump to deliver 42 mL/hr.