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The cause of hyponatremia must be diagnosed and treated. In some cases, cancer may cause the condition, and radiation, chemotherapy, or surgery to remove the tumor may correct the sodium imbalance.
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Severe hyponatremia can be treated by infusing a solution of 5% sodium chloride in water into the bloodstream. Moderate hyponatremia due to use of diuretics or an abnormal increase in vasopressin is often treated by instructions to drink less wate...
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