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Hyponatremia
Pronunciation
Definition 1
Lower-than-normal amount of sodium in the blood. (NCI Dictionary)
Definition 2
Lower than normal levels of sodium in the circulating blood. (NCI Thesaurus)
Definition 3
A disorder characterized by laboratory test results that indicate a low concentration of sodium in the blood. (NCI Thesaurus/CTCAE)
Definition 4
Hyponatremia is an electrolyte disturbance in which the sodium concentration in the serum is lower than normal. Sodium homeostasis is vital to the normal physiologic function of cells. Hyponatremia is defined as a serum level of less than 135 mEq/L and is considered severe when the serum level is below 125 mEq/L. (NICHD)
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