This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Child presents after trauma to head with hyponatremia, volume depletion and increased excretion of urinary Na . What is the probable diagnosis? \nSelect and explain. \nA. Cerebral salt wasting syndrome, B. SIADH, C. Adrenal hemorrhage, D. Autonomic failure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Cerebral salt wasting syndromeElectrolyte imbalance is common in traumatic brain injury (TBI), and contributes to brain swelling and to causing seizures.Cerebral salt wasting, a poorly understood form of excretory dysregulation in association with brain insult, leads to volume depletion and hlponatraemia.', 'role': 'assistant'}]