Dosage Calculation Help

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My instructor has a tendency of putting reconstitution dosage calculations on our exams.The problem is she asks for the dilution information. For example: (I just made this up so I dont know if it will actually work out. I just need to know how to set the problem up)

A pt is ordered to receive 70mg of gentamicin IM. The drug needs to be reconstituted to achieve a concentration of 200mg/mL. How many mL of dilution should be added.

How do you solve these types of problems?

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There should be a label given with the problem

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We weren't given any real education or materials on how to do these kinds of questions either, but I did find a book on Amazon that was very helpful with all the med math you'll encounter. Henke's Med-Math (Dosage Calculation, Preparation, and Administration) helped me pass all my med tests the first time....I'd definitely recommend it. Buy a previous/used edition (same material!) and save some money :) Good luck!

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For example: (I just made this up so I dont know if it will actually work out. I just need to know how to set the problem up)

A pt is ordered to receive 70mg of gentamicin IM. The drug needs to be reconstituted to achieve a concentration of 200mg/mL. How many mL of dilution should be added.

This is missing something... like ~passionateSN~ said.

Ask your instructor for practice problems.

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yea something is missing... why are they asking for how much needs to be diluted??? that not usually how orders come!

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