Glasgow Coma Scale (GCS) Calculator

The Glasgow Coma Scale objectively describes the extent of impaired consciousness. Essential in neurological physiotherapy, ICU rehabilitation, and traumatic brain injury management.

Clinical Applications

• Rapid neurological assessment in ICU and acute care physiotherapy settings
• Determining appropriate exercise intensity and communication strategies in TBI rehabilitation
• Monitoring consciousness-level trends as a marker of neurological recovery
• Guiding safe patient handling and positioning decisions in intensive rehabilitation

How to Interpret Results

• GCS ≤8 is the internationally recognised threshold for severe TBI and is traditionally associated with the need for airway protection — physiotherapy goals must be adjusted accordingly
• The Motor component (M) is the most predictive subscale for outcome; an M score of ≤5 warrants urgent medical review
• Sedation, intubation, and eye swelling can render components unscorable — document as "NT" (not testable) rather than assigning a score of 1

1. 1.Teasdale G, Jennett B (1974). Assessment of coma and impaired consciousness: a practical scale. Lancet, 2(7872), 81–84.
2. 2.Reith FC, Lingsma HF, Gabbe BJ, Lecky FE, Roberts I, Maas AI (2017). Differential effects of the Glasgow Coma Scale Score and its Components. Journal of Neurotrauma, 34(2), 381–389.
3. 3.Teasdale G et al. (2014). The Glasgow Coma Scale at 40 years: standing the test of time. Lancet Neurology, 13(8), 844–854.