GCS; Roadside to Resus

The Glasgow Coma Scale (GCS) serves as a standardized clinical tool for tracking impaired consciousness, though its utility extends far beyond its original 1974 design for traumatic brain injury. While often used to guide airway management, the scale is not a linear predictor of mortality; the motor component provides the most significant prognostic value. Different combinations of eye, verbal, and motor responses can yield identical total scores despite reflecting vastly different clinical outcomes, with mortality rates varying by as much as 30% within a single score. Accurate application requires consistent testing methods, such as utilizing trapezius squeezes over sternal rubs, and acknowledging limitations in patients with pre-existing conditions or those who are intubated. Ultimately, the GCS functions as one piece of a broader neurological assessment rather than a standalone definition of a patient's status.