Hypernatremia Causes

1. lack of water intake:
Cut off in the water, unconscious patients do not know to assist drinking water and no water or disease caused by pinocytotic obstacles. Day to stop water (including water in food) accounted for the loss of body fluids of 2% of body weight. Completely water 7-10 d, that is, the loss of body fluids to reach 15% of body weight can be fatal.

2. the loss of too much water:
Common in diabetes insipidus, diuresis permeability, diarrhea, vomiting, excessive dissolved into Bribe, urine concentration dysfunction, and lack of hydration.

3. barriers to sodium excretion:
Adrenal cortex in patients with hyperthyroidism, reduce sodium excretion, there is often accompanied by increased serum sodium. Reduced sodium excretion was also found in such patients, the ability of ADH release and barrier-free, but the release of ADH the "threshold pressure" improve, and that is when the body to the osmotic pressure increased to higher than normal when the extent of the release of ADH ,