What is the primary treatment for severe hypokalemia?

Intravenous potassium replacement is the primary treatment for severe hypokalemia because it allows for rapid restoration of potassium levels in the bloodstream when they are critically low. Severe hypokalemia can result in serious health complications, including cardiac arrhythmias, muscle weakness, and various other physiological disturbances. When potassium levels drop significantly, oral supplements may not be sufficient to raise levels quickly enough, and dietary adjustments alone cannot meet the immediate need for potassium repletion.

Intravenous administration ensures the potassium is delivered directly into the circulation, allowing for faster absorption and higher doses to be administered safely under medical supervision. It's also particularly important in situations where the patient may have gastrointestinal issues preventing adequate oral absorption or in emergency settings where timely intervention is crucial.

This approach emphasizes the importance of monitoring levels closely, as potassium replacement must be administered carefully to avoid complications such as hyperkalemia, which can also be dangerous.