Hyponatremia
Hyponatremia only means that the serum sodium ion concentration is lower than the normal level, and it may not necessarily be accompanied by a decrease in the body's sodium content. According to the acute onset of the disease, it can be divided into acute hyponatremia and chronic hyponatremia. The former refers to that within 48 hours, the serum sodium ion concentration drops below normal levels, otherwise it is chronic hyponatremia.
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