Hyponatremia in Traumatic Brain Injury

Pathophysiology and Clinical Implications

• Hypovolemia is a key feature in cerebral salt wasting, causing alterations in cardiovascular signs, including orthostatic changes in pulse and systolic blood pressure, according to the Neurosurgery guidelines 1
• Renal complications are possible due to the significant fluid and electrolyte shifts that occur, as noted by Neurosurgery and Praxis Medical Insights guidelines 1, 2
• Current guidelines recommend cautious correction of hyponatremia to avoid neurological complications, as stated by the Praxis Medical Insights guidelines 2
• Proper diagnosis requires assessment of volume status, urine sodium, and other laboratory parameters to distinguish between SIADH and CSW, according to the Neurosurgery guidelines 1