question: What is the role of brain natriuretic peptide in traumatic brain injury patients ?
answer: Brain natriuretic peptide concentrations are elevated in patients with traumatic brain during the acute phase and correlate with poor outcomes. In traumatic brain injury patients higher brain natriuretic peptide concentrations are associated with more extensive SAH,  elevated ICP and hyponatremia. Brain natriuretic peptide may play an adaptive role in recovery through augmentation of cerebral blood flow.