WGU Hesi Med Surg
WGU Hesi Med Surg ( 53 Questions)
A patient who weighs 91 kg receives a prescription for a continuous infusion of dopamine at 3 mcg/kg/min. The solution is labeled, “Dopamine 400 mg in 5% Dextrose injection 250 mL.” How many mL/hour should the nurse program the infusion pump to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
To find the answer, we can use the following steps:
- Calculate the dosage of dopamine in mcg/hour by multiplying the weight in kg by the rate in mcg/kg/min and by 60
- Calculate the concentration of dopamine in the solution by dividing the amount of dopamine in mg by the volume of solution in mL and multiplying by 1000
- Divide the dosage of dopamine by the concentration of dopamine in the solution to get the volume to be delivered in mL/hour
- Round the result to the nearest tenth
Using these steps, we get:
- (dosage of dopamine in mcg/hour) = (91) x (3) x (60) = 16,380 mcg/hour
- (concentration of dopamine in solution) = (400 / 250) x (1000) = 1600 mcg/mL
- (volume to be delivered in mL/hour) = (16,380) / (1600) = 10.2375 mL/hour
- (rounded volume to be delivered in mL/hour) = 10.2 mL/hour
Therefore, the nurse should program the infusion pump to deliver 10.2 mL/hour of dopamine in 5% dextrose injection to the patient.