Hypotonic dehydration Causes

These have many causes of hypotonic dehydration, patients with surgical are a common cause of the loss of extracellular fluid, it only added the lack of water or salt added, so the relative lack of sodium in the body than water.

Common causes: 1. continuity loss of gastrointestinal fluid, such as diarrhea, vomiting, gastrointestinal fistula, intestinal obstruction and so on, digestive juice with substantial loss of sodium; 2. large wound exudate, such as burns, extensive post-operative fluid loss; 3. excessive output water and sodium from kidney. Long-term use of diuretics, inhibition of renal tubular sodium reabsorption..

Extracellular sodium concentration decreased after the status was hypotonic, first of all reduce the body's secretion of antidiuretic hormone in order to discharge water, to increase the secretion of aldosterone in order to maintain sodium. At the same time, interstitial fluid into the blood circulation, in part, compensation for blood volume to maintain blood circulation. If lost or continue to lose too much salt, salt, water continues to discharge from the urine, the decline in extracellular osmotic pressure, water from the extracellular to the cells, the blood volume and interstitial fluid were significantly reduced, there would be a low volume of shock. At this time renal blood flow and filtration rate, urine or reduce urine.