MDCalc

FOUR (Full Outline of UnResponsiveness) Score

Grades coma severity; may be more accurate than the Glasgow Coma Scale.

Grade the best response in each category.

Eye response
Motor response (upper extremities)
Brainstem reflexes
Respiration pattern

Result:

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Management

  • Clinical management decisions should not be based solely on the FOUR Score in the acute setting and should be used in conjunction with other clinical information.

  • Very low FOUR scores (≤4) are more predictive of in-hospital mortality as compared to the lowest GCS (3T).

  • Improvement in score of >2 is predictive of survival in cardiac arrest (Fugate 2010).

  • Each point increase in the FOUR Score is associated with decreased mortality and morbidity.

Critical Actions

  • Abnormalities or decline in score should prompt reassessment and further evaluation for intracranial pathology.

  • While the FOUR Score may help suggest specific states of impaired consciousness, it is important to clearly identify the clinical criteria prior to making these diagnoses.