Used to assess a patient's level of consciousness after a brain injury; range is 3-15 with lower numbers more serious.

• A. GCS (Glasgow Coma Scale)
• B. Arrhythmia
• C. Pan Scan
• D. Popliteal block

Answer: (A)

The Glasgow Coma Scale is used to rate a patient’s level of consciousness after brain injury. It sums scores from three areas—eye opening, verbal response, and motor response—giving a total from 3 to 15, where lower numbers signal deeper impairment and higher numbers indicate better alertness. This makes it the best choice because it directly quantifies consciousness and tracks changes over time, guiding urgent decisions and monitoring. The other terms refer to different medical concepts: an abnormal heart rhythm, a comprehensive trauma imaging scan, and a leg nerve block, none of which assess consciousness.