GCS + FOUR
Coma Scales: Pediatric GCS + FOUR
Assess level of consciousness in children using the Pediatric Glasgow Coma Scale (3–15) and FOUR Score (0–16).
Assess level of consciousness in children using the Pediatric Glasgow Coma Scale (3–15) and FOUR Score (0–16).
The Pediatric Glasgow Coma Scale (GCS) is a standardized assessment tool to evaluate a child's level of consciousness after head injury or acute illness. It scores three domains: eye opening (1–4), verbal response (1–5, adjusted for age), and motor response (1–6), totaling 3–15. A lower score indicates more severe impairment of consciousness.
Scores are interpreted as: 13–15 mild, 9–12 moderate, ≤8 severe (may indicate need for intubation). The GCS is widely used in emergency departments and pediatric intensive care to guide management, predict outcomes, and monitor neurological status over time.
The FOUR Score (Full Outline of UnResponsiveness) is a newer alternative to GCS designed to overcome some GCS limitations. It assesses four domains: eye opening, motor response, brainstem reflexes, and respiration, each scored 0–4, for a total of 0–16. Lower = worse.
Advantages of FOUR over GCS: (1) assesses brainstem function directly via pupil and corneal reflexes, (2) includes respiratory assessment, (3) no verbal component (works better with intubated patients), (4) inter-rater reliability may be superior. FOUR scores are interpreted as: 13–16 minimal impairment, 9–12 moderate, 5–8 severe, 0–4 highly predictive of mortality.
Use Pediatric GCS when: (1) patient is extubated and capable of verbal response, (2) your institution's standard is GCS, (3) follow-up GCS trends are already established.
Use FOUR Score when: (1) patient is intubated and cannot speak, (2) you want direct assessment of brainstem reflexes, (3) you want inclusion of respiratory assessment, (4) your institution or critical care protocol uses FOUR as standard. Many units now use FOUR for intubated patients and GCS for those who can speak.
A GCS ≤8 represents severe impairment of consciousness. These patients cannot open eyes spontaneously, have severely limited or absent motor response, and/or have minimal to no verbal response (age-adjusted). Patients with GCS ≤8 are at high risk of airway compromise and are usually candidates for intubation and mechanical ventilation to protect the airway.
A GCS ≤8 is considered a clinical emergency and warrants immediate neuroimaging (CT/MRI), ICU-level monitoring, and specialist consultation. Prognosis depends on the underlying cause (trauma, hypoxia, infection, metabolic derangement).
A FOUR Score of 0–4 is highly predictive of mortality and represents profound impairment: the patient has little to no eye opening, no purposeful motor response, absent brainstem reflexes, and respiratory failure (apneic or ventilator-dependent). This score reflects severe brain dysfunction.
A FOUR Score in this range warrants immediate ICU care, imaging, specialist evaluation, and discussion with the family about prognosis and code status. The score provides both prognostic information and helps guide communication with family regarding expected outcomes.
The Pediatric GCS modifies the verbal scale for children under 2 years because they cannot speak intelligibly. Instead of words, the scale assesses vocal and behavioral responses: 1 None, 2 Inconsolable agitation, 3 Persistent crying/screaming to pain, 4 Crying but consolable, 5 Smiles, oriented to sound, follows objects, interacts normally.
For children ≥2 years, use the verbal scale: 1 None, 2 Incomprehensible sounds, 3 Inappropriate words, 4 Confused, 5 Oriented and converses normally.
Reassess frequency depends on clinical stability: (1) Acute phase (hours after injury/event): every 15–30 minutes, then every 1–2 hours as stable; (2) ICU patients: at least every shift (8-hour) or per ICU protocol; (3) Ward patients: at least daily or with any acute change; (4) Outpatient: at follow-up visits as clinically indicated.
Document serial scores to assess trend — improving, stable, or declining. Acute decline warrants stat neuroimaging and neurologist consultation. Trends in score are often more prognostically relevant than a single measurement.