Hyponatremia in a child with tuberculous meningitis in PICU: Cerebral salt wasting syndrome

Bosnak, Mehmet; Özdoğan, Hakkı; Yel, Servet; Bosnak, Vuslat; Haspolat, Kenan
September 2009
Dicle Medical Journal / Dicle Tip Dergisi;2009, Vol. 36 Issue 3, p200
Academic Journal
Cerebral salt wasting syndrome (CSW) has been reported in cases with subarachnoid haemorrhage, infections, head injury, brain tumours, transsphenoidal pituitary surgery, and neurosurgery. It is characterized by extracellular fluid depletion and hyponatraemia caused by progressive natriuresis with concomitant diuresis. The relationship between tuberculous menengitis and CSW in children has been desciribed rarely. We describe a case of CSW in an eight years old child with tuberculous meningitis in Pediatric Intensive Care Unit (PICU) whose main biochemical findings were low serum sodium, excessive urine sodium loss and clinical evidence of a contracted extracellular fluid volume. It is essential that in any child with hyponatremia and meningitis in PICU, an evaluation to be undertaken to differentiate between syndrome of inappropriate antidiuretic hormone secretion (SIADH) and CSW. A wrong diagnosis might lead to inappropriate fluid restriction and worsen the hypovolemia in children with CSW. Supplements of sodium chloride and mineralocorticoids may be useful in managing children with CSW. PICU professionals must be aware of the clinical and laboratory features that distinguish CSW from SIADH.


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