Comprehensive Neurological Status Assessment

Level of Consciousness Assessment

The American College of Critical Care Medicine recommends using the Glasgow Coma Scale (GCS) or FOUR score to assess level of consciousness, evaluating eye opening, verbal response, and motor response 1
The FOUR score provides a more complete assessment of brainstem function in unresponsive patients by measuring ocular responses to command and pain, pupillary responses, and respiratory pattern 1
The FOUR score shows good inter-rater reliability and may show better discrimination in the most unresponsive patients 1

The American Heart Association recommends evaluating pupillary size, symmetry, and reactivity to light 1, 2
Absent pupillary light reflex at 72 hours post-cardiac arrest has a false positive rate of 0-8% for predicting poor outcomes 3, 4

The American Academy of Neurology recommends assessing corneal reflexes by gently touching the cornea with a cotton swab and observing for blink response 1, 2
The combined absence of corneal reflex, pupillary light reflex, and motor response at 72 hours post-cardiac arrest has a very low false positive rate for predicting poor outcomes 4

The American College of Critical Care Medicine recommends evaluating motor response to verbal commands and painful stimuli 1, 2
Myoclonus within 72 hours of cardiac arrest has been associated with poor outcomes, though some patients with early-onset myoclonus have had good recovery 4

The American Academy of Neurology recommends testing various sensory modalities including temperature sensation, pinprick sensation, vibration perception, and pressure sensation 2

The American Academy of Neurology recommends using validated tools like the Montreal Cognitive Assessment (MoCA) or Mini-Mental State Examination (MMSE) for cognitive assessment in non-critical patients 5
The Society of Critical Care Medicine recommends using the Confusion Assessment Method for the ICU (CAM-ICU) or the Intensive Care Delirium Screening Checklist (ICDSC) for delirium assessment 1

The American College of Critical Care Medicine recommends performing neurological assessments at least hourly, or more frequently based on the patient's condition 6
Daily assessment by a neurologist or neurointensivist is recommended for patients with neurological concerns 2

The American College of Critical Care Medicine recommends considering the effects of sedation, opioids, and neuromuscular blockade on neurological assessment 1
"Wake-up tests" in patients with unstable intracranial hypertension pose significant risks and should be performed only when the benefit of neurological assessment outweighs the risk of physiological decompensation 1