How is traumatic brain injury severity categorized by GCS?

• A. Mild 13–15, Moderate 9–12, Severe ≤8
• B. Mild 3–8, Moderate 9–12, Severe 13–15
• C. Mild 10–14, Moderate 6–9, Severe 2–5
• D. Mild 15–16, Moderate 12–14, Severe 7–9

Answer: (A)

Glasgow Coma Scale scores range from 3 to 15 and are used to gauge brain function after injury by looking at eye opening, verbal response, and motor response. The severity categories align with the total score: mild is 13 to 15, moderate is 9 to 12, and severe is 8 or less. This split helps clinicians triage in the emergency setting and anticipate needed interventions—patients with a score of 8 or lower often require airway protection and more aggressive management, while higher scores indicate relatively better brain function but still require careful monitoring. The other range options don’t match these established thresholds, which is why this set is the correct one.