med math problem

Please show us how you're figuring these out & where your confusion lies. This looks like you're asking us to do your homework....

Also, you have an RN in your screenname, are you still in school?

You need to show us your work...this is not a "do your homework" for you forum...then we can help.

Hey Y'all!! I hope you can help -- I need a step by step explaination to acheive the answers. It shouldn't be as difficult as I'm making it seem.

THANKS ALL!! (:

1) A new medication, Z, comes as a powder which must be reconstituted as follows: IV use: Add 24ml of sterile water for injection. Each 2.5ml of resulting solution contains 500mg of Z. How many ml must be injected into a 100ml IV bag of NS to equal 1.5g of Z?

2) Procainamide drip is ordered for 2mg/min. The standard mixture of procainamide is 2g in 500ml. At how many ml/hr should the IV pump be set?

3) A unit of packed cells (approx 240ml) is to be administered over 4 hours. The blood tubing has a drop factor of 10 gtt/ml. Calculate the drip rate in gtt/min in order to administer the blood over 4 hours.

4) Physician orders a Heparin Bolus of 5,000 units IV followed by a Heparin drip at 1,000 units per hour. The standard mixture of Heparin in 25,000 units/ 500 D5W. How many ml/hr should the pump be set to administer the Heparin drip?

I see you just passed you nclex and got your RN. Why do you still need to know this math? Is it because your employer is making you take such tests?

Here is the answer to number #2 in dimensional analysis form. If you still need help with other's let me know. I love dimensional anaylsis....It makes figuring this stuff out much more simple.

2 mg ---- 1 g --------- 500 ml ------ 60 min ----- --60

_________________________________________ = ____ = 30ml/hr

min ----- 1000mg------- 2g --------- 1 hour ------- 2

The zero's can cancel all out making it 60/2. I use the dash lines because I can't make vertical lines. I hope you understand how I have this set up. If you need more help, let me know. I'll be glad to help all I can.