Hypotonic dehydration

Hypotonic dehydration refers to the simultaneous loss of water and sodium, but less water than sodium, serum sodium below the normal range, extracellular fluid is hypotonic, and the body reduces the secretion of antidiuretic hormones, making water in the renal tubules Reabsorption is reduced and urine output is increased to increase the osmotic pressure of extracellular fluid. But the extracellular fluid volume decreased even more. The interstitial fluid enters the blood circulation, although it can partially compensate the blood volume, but the reduction of interstitial fluid more than the reduction of plasma. Faced with a marked reduction in circulating blood volume, the body will no longer take into account osmotic pressure and try to maintain blood volume.