Flowchart Updated 8/23/2026

Hyponatremia Flowchart

Flowchart for evaluating hyponatremia starting with serum sodium below 135, then sorting by serum and urine osmolality, volume status, and urine sodium. It distinguishes pseudohyponatremia, translocational causes, and true hypotonic hyponatremia with renal…

hyponatremiaelectrolyte disordersserum osmolalityurine sodiumvolume status
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