Pediatrics Disorders of Sodium and Potassium 6d6a7b7b Which is not a feature of SIADH? A Euvolemia B Urine Osmolality > 100 mosm/ kg C Low urine sodium D Treatment is fluid restriction High-Yield Explanation SIADH - Syndrome of inappropriate ADH secretion: * Euvolemia * Urine osmolality > 100 mosm/kg * High urine sodium (>20-30 meq/L) * Treatment is water restriction.