A nurse is preparing to administer potassium 0.4 mEq/kg/hr to a newborn who weighs 6.7 lb. Available is potassium 10 mEq in 0.9% sodium chloride 100 mL. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Convert the newborn's weight from pounds (lb) to kilograms (kg). Client weight: 6.7 lbs Conversion factor: 1 kg = 2.2 lbs Weight (kg) = 6.7 lbs / 2.2 lbs/kg = 3.0455 kg. Calculate the total dose of potassium to be administered per hour (mEq/hr). Ordered rate: 0.4 mEq/kg/hr Total dose rate (mEq/hr) = 0.4 mEq/kg/hr× 3.0455 kg = 1.2182 mEq/hr. Calculate the concentration of the available solution in mEq per milliliter (mEq/mL). Available concentration: 10 mEq in 100 mL Concentration (mEq/mL) = 10 mEq/100 mL = 0.1 mEq/mL. Calculate the infusion rate in milliliters per hour (mL/hr). Infusion rate (mL/hr) = Total dose rate (mEq/hr) / Concentration (mEq/mL) = 1.2182 mEq/hr/0.1 mEq/mL = 12.182 mL/hr. Round the answer to the nearest tenth and apply leading/trailing zero instructions. = 12.2 mL/hr.