Question

You want to start an infusion of noradrenaline at 0.05 mcg/kg/min. you

have an infusion containing 8 mg in 50 mL. your patient weighs 65
kg. what rate will you set the infusion pump in mL/hr?
A. 1218.75 mL/hr
B. 609.375 mL/hr
C. 1828.125 mL/hr
D. 2437.5 mL/hr

Answer 1

The infusion pump rate should be set at 1218.75 mL/hr for a noradrenaline infusion of 0.05 mcg/kg/min for a 65kg patient, based on an 8 mg in 50 mL solution.

Step-by-step explanation:

To calculate the infusion pump rate in mL/hr for a noradrenaline infusion at 0.05 mcg/kg/min for a patient weighing 65kg with a solution of 8 mg in 50 mL, use the following steps:

1. Convert the patient's weight into micrograms: 65 kg = 65,000,000 mcg.
2. Calculate the total micrograms of noradrenaline needed per minute: 0.05 mcg/kg/min × 65,000 kg = 3250 mcg/min.
3. Convert the total amount of noradrenaline in the infusion bag from mg to mcg: 8 mg = 8000 mcg.
4. Determine how many minutes one infusion bag will last: 8000 mcg ÷ 3250 mcg/min = 2.4615 min.
5. Calculate the rate at which the infusion bag is to be administered per minute to deliver the correct dose: 50 mL ÷ 2.4615 min = 20.314 mL/min.
6. Convert the rate to mL/hr: 20.314 mL/min × 60 min/hr = 1218.75 mL/hr.

The rate you should set the infusion pump at is 1218.75 mL/hr, represented by answer choice A.