Nursing Math Help (Easy?)

13 Posts

Hi,

This might be easy, but can you help me with these math problems. I was able to find the correct answer, but I don't think I did the set up correctly. Can you tell me how you would set up and find these answers. I want to make sure that I've got the set-up right so that if I get them on an exam I will be able to work them. Sometimes the wording on these problems gets me.

1. Dextrose 5% in water with epinephrine is infusing at a rate of 63 mL per hour. The IV solution was prepared by adding 3 mg of epinephrine to dextrose 5% in water. The final solution contained a total volume of 200 mL. How many mg are infusing per hour? How many mg are infusing per minute?

I did: 3mg x 63mL divided by 200mL=0.945 mg/hr and divided by 60 to get 0.016 mg/min (rounded).

2. [COLOR=#000000]Dextrose 5% in water with lidocaine is infusing at a rate of 46 mL per hour. The IV

solution was prepared by adding 2400 mg of lidocaine to dextrose 5% in water.

The final solution contained a total volume of 1,000 mL. How many mg are

infusing per hour? How many mg are infusing per minute?

I did: 2400mg x 46 mL divided by 1000mL=110.4 mg/hr and divided by 60 = 1.84 mg/min.

Am I setting those up correctly? It almost seems too easy, like I should be doing analysis or something. [/COLOR]

Thanks,

Mary