If large volumes of dilute urine are seen, this can be a warning sign that overcorrection is imminent in these individuals.Sodium deficit = (140 – serum sodium) x total body waterTotal body water = kilograms of body weight x 0.6

FluidsOptions include:
Mild and asymptomatic hyponatremia is treated with adequate solute intake (including salt and protein) and fluid restriction starting at 500 millilitres per day (mL/d) of water with adjustments based on serum sodium levels. Long-term fluid restriction of 1,200–1,800 mL/d may maintain the person in a symptom-free state. Moderate and/or symptomatic hyponatremia is treated by raising the serum sodium level by 0.5 to 1 mmol per liter per hour for a total of 8 mmol per liter during the first day with the use of furosemide and replacing sodium and potassium losses with 0.9% saline. Severe hyponatremia or severe symptoms (confusion, convulsions, or coma): consider hypertonic saline (3%) 1–2 mL/kg IV in 3–4 h. Hypertonic saline may  lead to a rapid dilute diuresis and fall in the serum sodium. It should not be used in those with an expanded extracellular fluid volume. Electrolyte abnormalities
In persons with hyponatremia due to low blood volume (hypovolemia) from diuretics with simultaneous low blood potassium levels, correction of the low potassium level can assist with correction of hyponatremia. Medications
American and European guidelines come to different conclusions regarding the use of medications. In the United States they are recommended in those with SIADH, cirrhosis, or heart failure who fail limiting fluid intake.
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