Which electrolyte must be checked before starting insulin in diabetic ketoacidosis?
Answer and explanation
Correct answer: B. Potassium
- Step 1: Insulin drives potassium into cells and can cause dangerous hypokalemia if levels are already low.
- Step 2: Potassium is replaced if below the threshold.
Answer
Potassium.
Why not the others: The other electrolytes are monitored but do not decide whether insulin may start.
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