In assessing a head injury, which Glasgow Coma Scale change indicates the most severe deterioration?

In assessing a head injury, which Glasgow Coma Scale change indicates the most severe deterioration?

• A. GCS decreases from 13 to 12
• B. GCS decreases from 15 to 14
• C. GCS decreases from 13 to 10
• D. GCS remains 13

Answer: (C)

The key idea is that the Glasgow Coma Scale tracks consciousness level, with any drop in the score signaling deterioration. The larger the drop, the more severe the decline in brain function. Among the scenarios, the one showing the biggest decrease in score represents the most substantial loss of neurological function. The other options involve only small decreases or no change, which indicate less severe deterioration. Therefore, the scenario with the largest decrease is the most concerning indicator of deterioration.

The key idea is that the Glasgow Coma Scale tracks consciousness level, with any drop in the score signaling deterioration. The larger the drop, the more severe the decline in brain function. Among the scenarios, the one showing the biggest decrease in score represents the most substantial loss of neurological function. The other options involve only small decreases or no change, which indicate less severe deterioration. Therefore, the scenario with the largest decrease is the most concerning indicator of deterioration.