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Keys to Success: Knowing what is happening in the calculation rather than blindly following a formula. Setting up your calculations mathematically correct. 5 g (1000 mg/g) = 5000 mg is correct. 5 g x 1000 = 5000 mg is incorrect. ...

You might want to look at this article I wrote awhile back. There is also a dosage calculation book attached. https://allnurses.com/pre-nursing-student/master-your-drug-1148937.html

Hi students. If you want to save yourself hours of study time, and impress your friends, develop a strong memory. When I was in high school I spent $20 on a memory book written by Harry Lorayne because it promised that I would be able to memorize a d...

You might want to check out this article. You can also download my dosage calculation book there. https://allnurses.com/pre-nursing-student/master-your-drug-1148937.html

So just to be technically clear, you are starting with 150 mL/90 min and have to end up with mL/h. You will multiply by 60 min/h. Min will cancel out leaving 100 mL/h.

The only thing that matters is the 150 mL over 90 minutes. See if you can change that to mL/h.

Ok, great. It was written for pharmacy technicians, but the calculations are still the same. Most of the material you will need is in Chapter 2. Let me know if you have any questions.

Well, the way I have always taught this stuff is to not use formulas. If you look at my article and download my book, I think it will help you. The article is in pre-nursing and called Master your Dosage Calculations Before you get to Nursing School ...

There is 25,000 units in 50 mL, so that works out to 500 units/mL, which would be 250 units/0.5 mL. You are at 2 mL/h now, so you would have to increase it 0.5 mL per hour, bringing it 2.5 mL/h. Does that make sense?

There are a few ways of doing this. Probably the easiest way right now is to calculate the units of heparin/mL in the syringe. Then it will be pretty simple to see how much you have to increase the infusion.

Hi Nrsgstudnet1, The way you set it is is called ratio proportion. I prefer a method called dimensional analysis. You are starting with 62.5 mcg and have to change that mL of the 0.5 mg/mL solution. You don't have to pre-convert anything doing it thi...

I put together a pdf that goes into a little more detail regarding solving IV Flow Rate problems using dimensional analysis than my book does. I hope you find this helpful. Solving IV Flow Rate Problems Using Dimensional Analysis.pdf

The Typical Thought Process of a Student Working an IV Flow Rate Problem using dimensional Analysis A 59 y.o. male weighing 80 kb has been admitted to the ED and placed on a dopamine infusion at the rate of 45 mL/h. The IV bag contains 400mg of d...

Yes, that is the best method and how I teach it.

If you look at my article, Master Your Dosage Calculations Before you Get to Nursing School, you will see a lot of information there. There is a pdf in one of the comments which has all the information along with practice problems. You will learn how...

What is the drop factor on #1?

It seems like your teacher is making it difficult for those students who use dimensional analysis and set the entire problem up before doing any calculations.

Just curious, is 110 comments a record?

Jean, since it says that 0.5 g = 2 mL, you can make a ratio out of that. 0.5 g/2 mL which can be flipped upside down giving you 2 mL/5 g. Since 0.5 g = 2 mL, both of those ratios equal 1. Since you can see that the given is in mg, it is easiest to ju...

I think it is fine to help her understand the process, just as long as we don't do her homework without her learning anything. The way I like to explain it is that there are three parts to these problems: a given (in this case 700 mg), the units of t...

Thanks for the nice comments about my book. It makes me feel good that I stuck my nose into the nursing site. I usually stick to helping pharmacy students, but out of curiosity I looked at a dosage website for nurses and couldn't believe how complica...

I am not sure what you should do, but congratulations on the job offer!

I bet you are an A student.

Yes! That is correct. It wouldn't let me just say yes!