Paediatric Glasgow Coma Scale for infants
The Glasgow Coma Scale (GCS) is the standard bedside measure of consciousness, but its adult verbal descriptors assume a patient who can follow orientation questions. For pre-verbal children under 2 years a modified verbal scale is used so that crying and babbling patterns substitute for spoken orientation. This calculator sums the three sub-scores into a total from 3 to 15.
How it works
The total GCS is the sum of three independently scored domains: Eye opening (1 to 4), Verbal response (1 to 5), and Motor response (1 to 6). The eye and motor scales are identical to the adult GCS. The paediatric verbal scale replaces adult descriptors as follows: 5 = coos and babbles, 4 = irritable cry, 3 = cries to pain, 2 = moans to pain, 1 = no response. Always record the best response in each domain.
Total GCS = Eye (1-4) + Verbal (1-5) + Motor (1-6)
Range: 3 (deep coma) to 15 (fully responsive)Full descriptor comparison: adult versus paediatric
| Score | Eye opening | Adult verbal | Paediatric verbal (under 2) | Motor |
|---|---|---|---|---|
| 6 | — | — | — | Obeys commands |
| 5 | — | Oriented | Coos / babbles normally | Localises pain |
| 4 | Spontaneous | Confused | Irritable crying | Withdraws from pain |
| 3 | To voice | Inappropriate words | Cries to pain | Flexion (decorticate) |
| 2 | To pain | Incomprehensible sounds | Moans to pain | Extension (decerebrate) |
| 1 | None | None | No response | None |
The eye-opening and motor columns are identical to the adult scale. Only the verbal column changes for pre-verbal infants, substituting developmental behavioural responses for verbal orientation questions.
Severity bands
| GCS total | Severity | Clinical implication |
|---|---|---|
| 13–15 | Mild | Monitor; reassess for deterioration |
| 9–12 | Moderate | Frequent reassessment; consider imaging |
| 8 or below | Severe | Airway protection usually required |
A GCS of 8 or below is the conventional threshold for considering definitive airway management (intubation). This is a clinical guideline, not an absolute rule — the trend and rate of deterioration, the underlying cause, and the child’s trajectory all inform the decision.
Recording and documentation
Always document the component breakdown — for example E3 V4 M5 = 12 — not just the total. Two children with a total of 10 may have very different profiles: one might have normal eye opening and motor function with a restricted verbal score due to sedation, while another might have impaired eye and motor responses. The component scores are far more informative than the sum alone.
Factors that limit scoring
Several clinical factors artificially reduce scores in one or more domains and should be noted alongside the GCS:
- Intubation or artificial airway: removes the ability to score verbal response. Document as V-T (verbal: intubated).
- Sedation or paralysis: motor and verbal responses may be pharmacologically suppressed.
- Periorbital swelling: can prevent eye opening independent of conscious level.
- Developmental baseline: an infant with known developmental delay may have a lower baseline verbal and motor repertoire.
Serial GCS scoring — repeated at defined intervals — is more informative than a single measurement. Deterioration of 2 or more points in total is clinically significant and warrants immediate reassessment.
This is an educational tool. All clinical decisions should be made by qualified practitioners in the context of the full clinical picture.