Hyponatremia is an electrolyte disturbance defined as a decrease in serum sodium concentration of less than 135 mmol/L and is the most common electrolyte abnormality in hospitalized patients. The reported incidence of hyponatremia varies by healthcare facility, clinical setting, and the definition of hyponatremia used, but can be as high as 30% of patients in some studies. The prevalence of hyponatremia is increasing, according to studies. According to the duration, hyponatremia is classified as acute (up to 48 ho…