Why is potassium replacement still likely needed even if a child with DKA has an initial potassium level of 5.8 mEq/L?
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Correct answer: Because insulin and fluids drive K+ into cells while urinary losses continue
Even if initial serum potassium is elevated in DKA, total body potassium is depleted and once insulin and fluid therapy start, potassium shifts intracellularly and urinary losses continue—requiring replacement.
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