Patients were grouped according to serum sodium levels; normonatremia
(135-145 mmol/L), mild hyponatremia (131-134 mmol/L), moderate hyponatremia (126-130 mmol/L), severe hyponatremia ([less than or equal to] 125 mmol/L), and hypernatremia (>145 mmol/L).
and osmolality levels during mannitol administration, subjects were divided into groups (hypernatremia, normonatremia
, and hyponatremia), defined as follows: hypernatremia, [[Na.
Increase in serum sodium to normonatremia