Table 1 Serum sodium (Na) concentration, serum osmolality (Osm), serum AVP, and urine osmolality from initial evaluation at 2.5 months to 3 years of age
Age | Events | Serum Na (134-143 mmol/L) | Serum Osm (285-293 mOsm/kg) | Serum AVP (1.0-13.3 pg/mL) | Urine Osm (300-900 mOsm/kg) |
|---|---|---|---|---|---|
2.5 m | Initial presentation | 118 | 247 | < 1 | 390 |
5.5 m | After 1 month of water restriction and urea | 142 | 295 | 5.5 | n/a* |
3 yr | Off urea for > 6 months; ad lib intake | 139 | 295 | 3.1 | 628 |