Question

A syringe pump is delivering 2.5 mL/ hour of noradrenaline with a concentration of 160 micrograms /mL to a patient weighing 75 kg. What rate is being delivered in micrograms /kg/min ?

A. 0.05 micrograms /kg/min
B. 0.09 micrograms /kg/min
C. 0.12 micrograms /kg/min
D. 0.15 micrograms /kg/min
E. 0.20 micrograms /kg/min

Answer 1

To calculate the rate of delivery in micrograms/kg/min, multiply the delivery rate with the concentration of noradrenaline, then divide the rate of delivery in micrograms/min by the weight of the patient in kg.

Step-by-step explanation:

To calculate the rate of delivery in micrograms/kg/min, we need to first calculate the amount of noradrenaline delivered in micrograms/min. We can do this by multiplying the delivery rate (2.5 mL/hour) with the concentration of noradrenaline (160 micrograms/mL). This gives us 400 micrograms/min of noradrenaline.

Next, we calculate the weight of the patient in kilograms by dividing the weight in grams (75 kg) by 1000.

Finally, we divide the rate of delivery of noradrenaline in micrograms/min by the weight of the patient in kg and convert the result to micrograms/kg/min. Performing this calculation, we find that the rate being delivered is approximately 5.33 micrograms/kg/min.

Answer 2

The rate of noradrenaline being delivered in micrograms per kilogram per minute is 0.16 micrograms/kg/min.

Step-by-step explanation:

The rate of noradrenaline being delivered in micrograms per kilogram per minute can be calculated using the given information. First, we need to convert the flow rate of noradrenaline from milliliters per hour to milliliters per minute by dividing it by 60. Then, we can calculate the rate in micrograms per minute by multiplying the flow rate in milliliters per minute by the concentration of noradrenaline in micrograms per milliliter. Finally, we can calculate the rate in micrograms per kilogram per minute by dividing the rate in micrograms per minute by the patient's weight in kilograms.

So, the rate of noradrenaline being delivered in micrograms per kilogram per minute is 0.16 micrograms/kg/min.