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Вы правы Dimpassy. Hypernatremia, a frequently encountered electrolyte disorder, is defined as a serum sodium level greater than 145 mEq/L (145 mmol/L) and represents a deficit of water in relation to total body sodium. Hypernatremic dehydration may be caused by pure water loss (diabetes insipidus), hypotonic fluid loss (vomiting or diarrhea), or hypertonic sodium gain (hypertonic feeding preparations such as improperly prepared infant formula). (1) Severe hypovolemic hypernatremic dehydration induces brain shrinkage, which can tear the cerebral blood vessels, leading to cerebral hemorrhage, seizures, paralysis, and encephalopathy. (2)(3) Infants who have severe hypernatremia (serum sodium, >160 mEq/L [160 mmol/L]) often present with muscle weakness, a high-pitched cry, insomnia, or lethargy. (1) Younger children tend to have both a higher morbidity and mortality with severe hypernatremia. (2) http://pedsinreview.aappublications.org/cgi/content/extract/26/4/148
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