What are the complications of hypernatremia?
Early complications of high sodium levels in the blood are dizziness, irritability, seizures, and coma. Most of them are caused by the shrinkage of cells leading to cell damage or death. The central nervous system is most commonly affected. Hypernatremia can cause
subdural hemorrhage, venous thrombosis due to venous congestion, subcortical hemorrhage, cerebral infarction, seizures, brain edema (from rapid correction of hypernatremia), and increased mortality rate (from serum sodium levels above 180 mmol/L) in severe conditions.