Use of functional magnetic resonance imaging to assess cognition and consciousness in severe Guillain-Barré syndrome.

Objective: Functional neuroimaging may provide a viable means of assessment and communication in patients with Guillain-Barré Syndrome (GBS) mimicking the complete locked-in state. Functional neuroimaging has been used to assess residual cognitive function and has allowed for binary communication with other behaviourally non-responsive patients, such as those diagnosed with unresponsive wakefulness syndrome. We evaluated the potential application of functional neuroimaging using a clinical-grade scanner to determine if individuals with severe GBS retained auditory function, command following, and communication.

Functional Neuroimaging as an Assessment Tool in Critically Ill Patients.

Objective: Little is known about residual cognitive function in the earliest stages of serious brain injury. Functional neuroimaging has yielded valuable diagnostic and prognostic information in chronic disorders of consciousness, such as the vegetative state (also termed unresponsive wakefulness syndrome). The objective of the current study was to determine if functional neuroimaging could be efficacious in the assessment of cognitive function in acute disorders of consciousness, such as coma, where decisions about the withdrawal of life-sustaining therapies are often made.

Electroencephalogram for prognosis after cardiac arrest.

Background: In assessing neurologic prognosis after cardiac arrest (CA), electroencephalogram (EEG) reactivity has not been specifically included with EEG classifications. Most studies have divided recordings into benign and malignant; however, some patterns within these groups may have greater prognostic significance than such broad classifications. We sought to explore reactivity, with broad classifications and subclassifications for their prognostic significance.

Seizure detection with a commercially available bedside EEG monitor and the subhairline montage.

Introduction: Availability of standard, continuous electroencephalography (cEEG) monitoring in ICU is very limited, although commercially available 4-channel modules are present in many ICUs. We investigated the sensitivity of such modules compared with the more complete monitoring with a standard EEG system.

Methods: Seventy patients at high risk of seizures in the medical-surgical intensive care unit and Epilepsy Monitoring Unit were recorded simultaneously for at least 24 h with a 4-channel commercial ICU bedside monitoring system (Datex-Ohmeda) with a subhairline montage and a standard EEG machine (XLTEK) using the international 10-20 system of electrode placement.