[Prognostic significance of neurophysiological parameters in nontraumatic apallic syndrome]

The time course of neurophysiological parameters (EEG, evoked potentials of various modalities, including P300, and polysomnography) was followed up in 10 patients with apallic syndrome (AS) of nontraumatic origin (heart arrest, stroke, neuroinfection, etc.) during the formation of the syndrome and the condition of various severity: incomplete formation of AS eventuating in gross psychoneurological defects and complete formation of AS (a stable vegetative state). A dynamic follow-up of not only EEG of awaken and sleeping patients, but of their evoked potentials, specifically somatosensory and P300, were shown to be significant for assessment of the course of AS and prediction of its outcome.