Management of Decreased Glasgow Coma Scale Score

Initial Assessment and Management

Perform an immediate complete neurological examination, including assessment of all GCS components, pupillary response, and vital signs, as recommended by the Centers for Disease Control and Prevention, based on MMWR Recommendations and Reports 1
Document the full GCS score and compare with previous assessments to determine if this is an isolated change or part of a broader deterioration pattern, as suggested by the World Journal of Emergency Surgery 2
Assess for other signs of neurological deterioration such as new focal neurological deficits, changes in pupillary response, or vital sign abnormalities, according to the World Journal of Emergency Surgery and MMWR Recommendations and Reports 1, 2

For patients with GCS ≤12 after the decrease, urgent neuroimaging (CT scan) is indicated, and consider neurosurgical consultation, as recommended by the Journal of Infection and World Journal of Emergency Surgery 2, 3
Monitor vital signs closely, maintaining systolic BP >100 mmHg or MAP >80 mmHg, and perform serial GCS assessments every 15-30 minutes initially, then hourly if stable, as suggested by the World Journal of Emergency Surgery 2
Assess for causes of decreased consciousness (metabolic, infectious, medication effects), according to the Journal of Infection 4

In patients with suspected increased intracranial pressure, avoid lumbar puncture until imaging is performed if GCS is ≤12, as recommended by the Journal of Infection 3, 5

Decrease in GCS by ≥2 points (high risk of deterioration), as indicated by the Journal of Infection 4
Persistent or worsening decrease in consciousness, according to the Journal of Infection 3
Signs of increased intracranial pressure (headache, vomiting, papilledema), as suggested by the Journal of Infection 5

Document recovery pattern and final neurological status prior to discharge, as recommended by the World Journal of Emergency Surgery 2
Early deterioration is common in patients with intracranial pathology, with over 20% experiencing a decrease in GCS of two or more points between initial assessment and emergency department evaluation, as reported by Stroke 6