Fractional Excretion of Uric Acid as a Therapeutic Monitor in Cerebral Salt Wasting Syndrome

Cerebral salt wasting syndrome (CSWS) is an underdiagnosed cause of hyponatremia that occurs in the setting of intracranial lesions. [1] Peters et al, first described it in 1950. The syndrome is characterized by excessive natriuresis leading to hyponatremic dehydra­tion in patients with intracranial disease. [2] This syndrome usually appears in the first week after brain injury and spontaneously resolves in two to four weeks. We describe a case of CSWS that occurred 6 weeks after cerebrovascular accident (CVA) (right temporoparietal infarction).