Which item is not a component of the Glasgow Coma Scale?

• A. Eye opening
• B. Verbal response
• C. Motor response
• D. Respiratory rate

Answer: (D)

The Glasgow Coma Scale assesses level of consciousness by looking at three domains: eye opening, verbal response, and motor response. Each domain has its own scoring system, and you add the scores to get a total from 3 to 15, where a higher score means better responsiveness. Respiratory rate, while important clinically, is not part of this scale because the GCS is specifically measuring neurological responsiveness to stimuli and commands, not breathing or ventilation status. The items that are included—eye opening, verbal response, and motor response—reflect how the brain responds to the environment and to pain or instructions. Respiratory rate does not provide information about consciousness or neuromotor function, so it isn’t scored as part of the Glasgow Coma Scale.