Master Diabetes & Thyroid Disorders 2026: Ace the Ultimate Pathophysiology & Management Challenge!

In DKA the patient is profoundly dehydrated from osmotic diuresis, and this low circulating volume reduces organ perfusion and kidney function. Giving fluids is mainly about rehydration to restore intravascular volume and improve tissue perfusion, which also supports correcting electrolyte losses and prepares the body for insulin therapy. As perfusion improves, kidney function returns, helping to clear glucose and ketones and enabling safer electrolyte management, especially potassium. Fluids also set the stage for insulin to work effectively and for glucose to be corrected gradually without causing dangerous shifts.

It’s important to remember that the goal isn’t to dilute blood glucose or to prevent insulin action; it’s to repair volume status and perfusion, with fluid therapy carefully coordinated with potassium replacement and subsequent insulin therapy.