An intravenous infusion is to contain 15 meq of potassium ion and 20 meq of sodium ion in 500 ml of 5% dextrose injection. using potassium chloride injection containing 6 g/30 ml and 0.9% sodium chloride injection, how many milliliters of each should be used to supply the required ions?

To supply the required ions it is necessary to inject 5,6mL of 6g/30mL solution and 131,1 mL of 0,9% solution.

Explanation:

1mEq of sodium are 59mg of NaCl and 1mEq of potassium are 75mg KCl

in intravenous infusion 15 mEq of K are:

15x75mg KCl = 1,125g of KCl

And 20 mEq of Na are:

20x59mg NaCl = 1,18g of NaCl

To supply the potassium ion it is necessary to inject:

1,125g of KCl× = 5,6mL  of 6g/30mL solution

And, to supply the sodium ion it is necessary to inject:

1,18g of NaCl× = 131,1 mL of 0,9% solution

I hope it helps!

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