Assesses level of consciousness after brain injury
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Disclaimer: The clinical scoring and algorithms on this platform are intended strictly for professional informational purposes. They do not constitute a definitive medical diagnosis, treatment, or clinical decision. The final judgment and responsibility lie with the treating physician.
Yasal Uyarı: Bu platformdaki klinik skorlamalar ve algoritmalar yalnızca sağlık profesyonellerini bilgilendirme amaçlıdır. Herhangi bir kesin tıbbi teşhis, tedavi veya klinik karar yerine geçemez. Nihai karar ve sorumluluk hastayı yatak başında değerlendiren hekime aittir.
Disclaimer: The clinical scoring and algorithms on this platform are intended strictly for professional informational purposes. They do not constitute a definitive medical diagnosis, treatment, or clinical decision. The final judgment and responsibility lie with the treating physician.
Use GCS in any patient with reduced, fluctuating, or impaired consciousness regardless of cause: traumatic brain injury, stroke, metabolic encephalopathy, toxic ingestion, post-cardiac arrest, or post-seizure. Record the GCS on arrival, after initial resuscitation, and serially over time. The admission GCS predicts outcomes and guides resource allocation (triage), CT imaging decisions, airway management (GCS ≤ 8 is the traditional intubation threshold), and ICU admission. In paediatric patients (< 4 years), use the paediatric-modified GCS, which adjusts the verbal component for pre-verbal children.
Always report GCS as component scores, not just the total. A GCS of 7 recorded as E1V2M4 tells a completely different clinical story than E4V2M1 — both sum to 7 but imply very different neurological pictures and prognoses. The Motor component is the most prognostically powerful of the three subscales: an M ≤ 2 (extension or no response) carries very high morbidity and mortality even if Eye and Verbal scores inflate the total. Trending GCS over time matters more than a single value — a rapid fall of 2 or more points demands immediate reassessment regardless of the absolute score.
GCS cannot be reliably applied in intubated patients (Verbal scored as 'T'), pharmacologically sedated/paralysed patients, or patients with significant facial trauma affecting eye opening. In these situations, Motor response alone is used as a surrogate — Motor ≤ 5 in an intubated patient (Motor GCS, or 'mGCS') has been validated as a standalone predictor and is used in ICU prognostication. Additionally, alcohol or drug intoxication can depress GCS to 10–12 without structural brain injury; serial reassessment after detoxification is essential before attributing a depressed GCS solely to intoxication.