HYPONATREMIA has been observed repeatedly ... The water diuresis was accompanied by a sudden drop in the urine osmolality to a low value of 141 milliosmols per liter (seventeenth day, Fig.

SIADH is characterized by decreased serum osmolality with inappropriate urinary ... As a result, sodium excretion in the urine increases, resulting in low serum sodium values (Palmer, 2000).

Signs and symptoms associated with hyponatremia are secondary to cellular hypo-osmolality. Fever, headache, nausea and vomiting, muscle cramps weakness, and confusion occur when serum sodium ...