What is the last resort treatment for hyperkalemia when other measures fail?

• A. Insulin
• B. Calcium gluconate
• C. Dialysis
• D. Kayexalate

Answer: (C)

In the management of hyperkalemia, when other treatments have failed to adequately reduce serum potassium levels, dialysis is considered the last resort. This is due to its ability to effectively remove potassium from the bloodstream, particularly in situations where there is significant renal impairment or when other methods have been ineffective.

Dialysis can be life-saving in cases of severe hyperkalemia, especially when the patient exhibits life-threatening symptoms such as cardiac arrhythmias or there is a substantial elevation in potassium levels that poses serious risks. While options such as insulin and calcium gluconate can stabilize cardiac membranes and promote the uptake of potassium into cells, and Kayexalate can facilitate the gastrointestinal excretion of potassium, they may not sufficiently lower potassium levels in urgent situations.

Thus, dialysis becomes the definitive intervention when immediate and effective potassium removal is crucial, solidifying its role as the ultimate option when other therapeutic measures are unsuccessful.