IV dilution help !!! Help pls

Published

How much of the diluted solutions will you need to draw up for the following ordered doses?

Mrs Ling is ordered 2.5mg IV Morphine. You dilute 10mg/ml to a total of 10ml

Mr George is ordered 500mg of Flucloxacillin. You reconstitute 1g to a total of 10ml in normal saline

Ms Flash is ordered 2mg of metoprolol. You dilute Metoprolol 5mg/5ml to a total of 20ml.

John Johns has a frusemide infusion running continuously. You make up the infusion to 500mg in a 50ml syringe.

How many mg/ml will your solution provide?

The doctor requests you run the infusion at 2mg/hr. How many ml/hr will you set the pump?

Two hours later, John is not passing urine. The doctor requests you run the Lasix infusion at 5mg/hr. How many ml/hr will you set the pump?

While you are at dinner, Joan sets the pump to deliver 3 ml/hr. How many mg/hr is John now receiving

Good job! You got the answer correct!!! And now you know how to solve the rest of the problem.

Up Vote Up Vote ×
Good job! You got the answer correct!!! And now you know how to solve the rest of the problem.

Awesome, thank you

Up Vote Up Vote ×
Okay well...you are a bit of a mess but that's okay. You'll get this, I promise. Let's start here.

-you have 5mg of medication diluted in 20mls of fluid.

-how many mg of med in each ml? Hint: this is simple division.

Once you figure this out let us know and we'll go to part two.

And just so you don't get discouraged this step is the foundation for the rest of the problems.

5mg diluted in 20ml is 0.25mg/ml . but if the doctor has orded 2mg wouldnt i do Strength required x Stock Strength Volume

Stock Strength

2mg x 20ml / 5mg/ml?

Up Vote Up Vote ×
5mg diluted in 20ml is 0.25mg/ml . but if the doctor has orded 2mg wouldnt i do Strength required x Stock Strength Volume

Stock Strength

2mg x 20ml / 5mg/ml?

Yes. You could solve the problem this way.

Wuzzie was trying to get you to reason out how to solve the problem rather than memorizing and applying formulas.

Note that your answer is not exactly correct. The correct answer is

20mg x 20ml / 5mg

NOT

20mg x 20ml / 5mg/ml as you have. I suspect this was a careless error, but units matter.

Up Vote Up Vote ×

Sometimes the answer to the question is not always the answer.

Diluting IVP medications is not evidence based for most medications.

Please review this information before diluting. Calculations may not be necessary.

https://www.ismp.org/Tools/guidelines/IVSummitPush/IVPushMedGuidelines.pdf

Refer to the package insert to determine whether you should be diluting in the first place.

Up Vote Up Vote ×
+ Join the Discussion