Replacement Fluids and Blood draw.

Re: Replacement Fluids and Blood draw.

This is what I know about potassium...I will have to look into the Mag info. I am assuming you do not have a KCL protocol and are following each MDs orders. A serum K+ of 3-4mEq/L correlates with a 100-200 mEq loss. Post infusion of K. K+ levels can be expected to increase 0.25 mEq/L for each 20 mEq dose. Serum K+ levels should be drawn no sooner than one hour after administration and preferably more than one hour after the administation. It takes more than one hour for peak effect. Most protocols that I have seen are anywhere from 1-2 hours post infusion. I will see if I can find some specific info on mag draw post infusion.