Need help with pharm question please

[direw0lf, BSN]

The question is here: (you need to see the drug label)

Study Guide For Pharmacology 8th Edition Chapter 14.E Problem 21IIA Solution | Chegg.com

I got 6.6 mL for how many mL of diluent should be added.

And the drug solution equals 8 mL.

The answer in the back of the book for C. is 37-38 gtt/min. I got 44.1 gtt/min.

My calculation is (100mL x 15 gtt/mL) over 40 min. Then I added 6.6 mL to that since it is not 5 or less.

What am I doing wrong please?

Thank you anyone!

[Rose_Queen, BSN, MSN, RN]

How much of the nafcillin are you actually adding? The order calls for 1,000mg. How many mg are in the vial that you've just reconstituted? So, look at how many mL of medication you're adding to your 100mL bag.

Also, where were you adding the 6.6mL? (Just curious.)

[direw0lf, BSN]

How much of the nafcillin are you actually adding? The order calls for 1,000mg. How many mg are in the vial that you've just reconstituted? So, look at how many mL of medication you're adding to your 100mL bag.

Also, where were you adding the 6.6mL? (Just curious.)

Thank you for replying! I have a big test tmw. I'm not sure these type of problems are even going to be on the test, but I got stuck on this one.

I added 6.6mL to my answer of 37.5 gtt/min.

So I did 100mL x 15 gtt/mL / 40 min = 37.5 + 6.6 = 44.1

It says to add the volume of drug solution unless it's equal to or less than 5 mL.

If my drug solution equals 8 mL is that how many I'm adding to the 100 mL bag?

[Rose_Queen, BSN, MSN, RN]

Ok. You've made a couple missteps here. The first is how much of the drug you're adding. Your order calls for 1,000mg. You have a vial with 2g.

The second misstep is where you're adding the 6.6mL (which is not a correct action... see misstep #1). You would use the entire volume in the first step. So, if you were going to add 6.6mL (hint, hint, misstep #1), your equation would be set up differently.