Secondary Brain Injury is best described as which of the following?

• A. Temporary Neurologic Dysfunction After Impact
• B. Direct Damage At Moment Of Impact
• C. Worsening Damage From Hypoxia, Hypotension, Swelling
• D. Brain Injury From External Force

Answer: (C)

Secondary brain injury is the worsening of brain damage that occurs after the initial trauma, driven by processes such as insufficient oxygen delivery, low blood pressure reducing cerebral perfusion, and brain swelling that raises intracranial pressure. This cascade can magnify the original injury even after the primary impact is controlled. The option describing worsening damage from hypoxia, hypotension, and swelling best captures this post-injury cascade. The other ideas describe damage at the moment of impact or due to external force, not the subsequent progression that defines secondary injury. In practice, preventing secondary injury means maintaining adequate oxygenation and blood pressure to preserve cerebral perfusion and managing swelling and related factors.