Emergency Medicine articles covering diagnosis, lab studies, imaging, procedures, prehospital care, emergency department care, prognosis, follow-up.
What is the maximum recommended rate of IV potassium repletion?
10 to 20 meq/h
but can increase to as high as 40 to 100 meq/h for those with paralysis or life-threatening arrhythmias
Of note, potassium concentrations > 60 meq/L should be administered through a central line given the pain that can be caused when given through a peripheral vein.
Source
Rose, B. MD. "Clinical manifestations and treatment of hypokalemia" Up to Date. 24 Jan 2009.