Establish adequate renal function (UOP ~ 50 ml/hr).
If K is > 5.3 mEq/L, do not give K but check serum K q2hrs.
If K is b/n 3.3 and 5.3 mEq/L, give 20-30 mEq of K in each liter of IV fluid to keep serum K between 4-5 mEq/L.
If serum K is < 3.3, hold insulin and give 20-40 mEq of K per hr until K > 3.3 mEq/L.
NB: K repletion affects the saline solution that is given since K is as osmotically active as sodium.
Also, all patients with DKA or HHS have a substantial potassium deficit even when the K level appears normal.
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