|Written by Dr.Md.Redwanul Huq (Masum)|
|Sunday, 15 January 2012 16:21|
Hypernatremia is a clinical condition which is characterized by primary water depletion i.e. increased plasma osmolality.
Causes of Hypernatraemia:
1. Inadequate water retention (i.e. excessive water loss) by kidney:
i) Diabetes insipidus
ii) Diabetic ketoacidosis
iii) Hyperosmolar non- ketotic diabetic coma
2. Excessive Na+ retention :
ii) Cushing Syndrome
3. Excessive Na+ intake:
ii) Hypertonic sodium solution
4. Increased loss of water through lungs and skin:
iii) Hot environment
5. Inadequate water intake.
ii) Exaggerated reflexes
For hypernatremia following investigations are done-
1. Serum electrolytes
2. Investigations to find out the underlying cause.
Treatment of hypernatremia:
Treatment of hypernatremia can be as below-
1. If Na+ concentration is more than 170 mmol /L – 0.45 % NaCl is infused and if Na+ concentration is between 150 and 170 mmol /L – 0.45% NaCl or 5% dextrose is infused
2. Treatment of underlying cause.