The<unk>  is a clinical grading scale designed for use by medical professionals in the assessment of patients with impaired level of consciousness. It was developed by Dr. Eelco F.M. Wijdicks and colleagues in Neurocritical care at the Mayo Clinic in Rochester, Minnesota. "FOUR" in this context is an acronym for "Full Outline of UnResponsiveness". The<unk>  is a 17-point scale (with potential<unk> s ranging from 0 - 16). Decreasing<unk>  is associated with worsening level of consciousness. The<unk>  assesses<unk>  domains of neurological function: eye responses, motor responses, brainstem reflexes, and breathing pattern. The rationale for the development of the<unk>  constituted creation of a clinical grading scale for the assessment of patients with impaired level of consciousness that can be used in patients with or without endotracheal intubation. The main clinical grading scale in use for patients with impaired level of consciousness has historically been the Glasgow Coma Scale (GCS), which cannot be administered to patients with an endotracheal tube (one component of the GCS is the assessment of verbal responses, which are not possible in the presence of an endotracheal tube). The<unk>  has been validated with reference to the Glasgow Coma Scale in several clinical contexts, including assessment by physicians in the Neurocritical Care Unit, assessment by intensive care nurses, assessment of patients in the medical intensive care unit (ICU), and assessment of patients in the Emergency Department. Comparison of the inter-observer reliability of the<unk>  and the GCS suggests that the<unk>  may have a modest but significant advantage in this particular measure of test function. Overall,<unk>  has better biostatistical properties than Glasgow Coma Scale in terms of sensitivity, specificity, accuracy and positive predictive value. +FOUR - Full Outline of UnResponsiveness Points Eye response Motor response Brainstem reflexes Respiration 4 Eyelids open or opened, tracking, or blinking to command Thumbs-up, fist, or peace sign Pupil and corneal reflexes present Not intubated, regular breathing pattern 3 Eyelids open but not tracking Localizing to pain One pupil wide and fixed Not intubated, Cheyne–Stokes breathing pattern 2 Eyelids closed but open to loud voice Flexion response to pain Pupil or corneal reflexes absent Not intubated, irregular breathing 1 Eyelids closed but open to pain Extension response to pain Pupil and corneal reflexes absent Breathes above ventilator rate 0 Eyelids remain closed with pain No response to pain or generalized myoclonus status Absent pupil, corneal, and cough reflex Breathes at ventilator rate or apnea
FOUR score
Krenning score
Rockall score
BODE index
Eagle score
Baux score
Manchester score
Kapandji score