Q: The doctor writes a prescription for an insufflation for 500 mg of Amoxicillin for an adult. The active ingredient Amoxicillin is combined with a medium of Calcium Carbonate. There is a 1:3 ratio of

Amoxicillin to Calcium Carbonate. The same insufflation needs to be created for an infant; the total weight of the new insuffulation is 300 mg. What is weight of Calcium Carbonate for the new insuffulation and what is the weight of Amoxicillin for the new insuffulation?

A: These are simple dimensional analysis problems. You look at what units they want the answer in, and you multiply and divide whatever you're given until you end up with the units.
I'll do 1. [ You do the rest.
You need 20 mg of Tobramycin, and you are given them in 30mg/2mL vials. So the conversion factor is:
30 mg = 2 mL; 15 mg = 1 mL
So:
20 mg (1 mL / 15 mg) = 1.33 mL
You need to

administer 1.33 mL Tobramycin solution q24hr. ]

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Question

Asked 8/21/2012 8:34:12 PM

Updated 8/5/2014 12:30:43 PM

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The doctor writes a prescription for an insufflation for 500 mg of Amoxicillin for an adult. The active ingredient Amoxicillin is combined with a medium of Calcium Carbonate. There is a 1:3 ratio of Amoxicillin to Calcium Carbonate. For an insufflation of 300 mg, there will be 75 mg of Amoxicillin, and 225 mg of calcium carbonate. 300 / (1+3) = 75. 1 part = 1 x 75 = 75 mg. 3 parts = 3 x 75 = 225 mg.

Added 8/5/2014 12:25:17 PM

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There is 4 ml of grape flavoring to every 100ml of 200mg Amoxicillin. The patient wants apple. You can add 1/5 the amount of apple as you can grape. So for every 100ml, you can add 4/5 = 0.8ml of apple. 300ml is then 0.8 x 3 = 2.4ml of apple.

Added 8/5/2014 12:30:43 PM

This answer has been confirmed as correct and helpful.

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