

j_ajon-2021-006_tab_001
| CSW | SIADH | Diabetes Insipidus | |
|---|---|---|---|
| Volume Status | Hypovolemia | Normovolemia or hypervolaemia | Hypovolemia |
| Serum Sodium Concentration | Decreased | Decreased | Increased |
| Urine Sodium Concentration | Increased | Increased | Decreased |
| Urine Output | Increased | Normal | Increased |
| Mechanism | Excessive secretion of sodium and water | Water retention due to elevated ADH (vasopressin) | Free water loss due to decreased ADH (vasopressin) |