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 ...
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 ...