Characteristics of Types of Electroencephalograms in Patients with Cerebral Contusion of Mild Severity in the Acute Period with Subarachnoid and without Subarachnoid Hemorrhage

Abstract

group with cerebral contusion of the mild severity without hemorrhage, for which they are characteristic, types of EEG were plane, border and normal. Analysis of the results of the study showed that in patients in the acute period of the cerebral contusion of the mild severity with subarachnoid hemorrhage, there was a significant difference with respect to all types of EEG ( р < 0.05) control. In patients with cerebral contusion of the mild severity without subarachnoid hemorrhage in acute period a significant difference was observed only with respect plane ( р 1 < 0.05), normal ( р 1 < 0.05) and border ( р 1 < 0.05) types of EEG compared to control. Changes of polyrhythmic ( р 1 > 0.05) and synchronized ( р 1 > 0.05) types of EEG in patients with cerebral contusion of the mild severity without subarachnoid hemorrhage were unlikely compared to the control. Comparing the studied groups in the acute period of the cerebral contusion of the mild severity among ourselves, we found the significance of differences with respect to polyrhythmic ( р 2 < 0.05), synchronized ( р 2 < 0.05), normal ( р 2 < 0.05) and border ( р 2 < 0.05) types of EEG, and relatively plane types of EEG indicators were unreliable ( р 2 > 0.05). Conclusions. These studies reflect the pathogenesis of trauma, point to the special role of nonspecific brainstem and hypothalamus systems, as triggers that lead to impaired cortical-subcortical and cerebral-spinal neurodynamics. Among the EEG characteristics, the most important for diagnosis is the phenomenon of synchronization, which reflects the phase of brain injury and is expressed by the rise of slow δ (delta) and θ (theta) waves. Pathological processes in the cerebral contusion of the mild severity of EEG are reflected by a combination of focal and cerebral changes in bioelectric activity and can be used for diagnostic and expert purposes. hemorrhage, acute period, types of electroencephalograms.