Hyponatremia indicates dilution of sodium ... He was treated with intravenous infusion of fluids. On September 27 the serum sodium concentration was 105 milliequiv. per liter.

Hyponatremia commonly occurs in patients with aneurysmal subarachnoid hemorrhage. Two mechanisms have been proposed as causes: syndrome of inappropriate anti-diuretic hormone and cerebral salt ...

Hyponatremia is a serum sodium concentration level of less than 135 mEq/L (< 135 mmole/L, SI) for at least 1 day (Kurokawa et al., 1996). A value of less than 120 mEq/L is considered a critical ...