Mild water intoxication is usually corrected by drinking less than a quart of water a day for several days. Untreated water intoxication can be fatal, but this outcome is quite rare.
The prognosis for treating hypernatremia is excellent, except if neurological symptoms are severe or if overly rapid attempts are made to treat and reverse the condition
Hypernatremia is especially dangerous for children and the elderly
Severe hypernatremia has a mortality rate of 40-60%
Hypernatremia can cause neurological damage due to shrinkage of brain cells
High serum sodium levels (hypernatremia ) occur at sodium concentrations over 145 mM
--> causes of hypernatremia --> increased serum osmolality --> water shifts from cell to plasma --> cells shrink ---> manifestation
Severe hypernatremia, with serum sodium above 152 mM, can result in seizures and death
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High serum sodium levels