The order is: Potassium Chloride Solution 30 mEq PO Bid. Available: Potassium Chloride Solution is 45 mEq/15 ml. How many ml of Potassium Chloride should you administer?

Question

The order is: Potassium Chloride Solution 30 mEq PO Bid.

         Available: Potassium Chloride Solution is 45 mEq/15 ml.

         How many ml of Potassium Chloride should you administer?

I answered 10 mL

Answer 1

30 mEq x 15 ml/45 mEq = 10 mls

This is simply using dimensional analysis where you put mEq x ml/mEq and end up with mls.

If you don't want to do it that way, you can use a simple ratio, set up as

45 mg/15 ml = 30 mEq/x mls and solve for x