The healthcare provider prescribes an IV solution of isoproterenol 1 mg in 250 mL of Dextrose in Water (D/W) at a rate of 300 mcg/hour. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only.)

The healthcare provider prescribes an IV solution of isoproterenol 1 mg in 250 mL of Dextrose in Water (D/W) at a rate of 300 mcg/hour. Since 1 mg is equal to 1000 mcg, the solution contains 1000 mcg of isoproterenol in 250 mL. This means that for every mL of the solution, there is 4 mcg of isoproterenol (1000 mcg / 250 mL = 4 mcg/mL). To administer a dose of 300 mcg/hour, the nurse should program the infusion pump to deliver 75 mL/hour (300 mcg/hour ÷ 4 mcg/mL = 75 mL/hour).