Dynamics of eeg and psychophysiological indicators of acute poisoning neurotoxicants on the stage of rehabilitation on the background of different methods of treatment

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Objective. To evaluate the dynamics of functional activity of brain structures underlying cognitive functions in patients with encephalopathy due to poisoning with neurotoxicants on the stage of rehabilitation. Material and methods. Fifty-six patients were examined. The main group consisted of 40 patients treated with intravenous injections with mexidol (n=10), combination of mexidol with non-pharmacological methods – mesodiencephalic modulation (MDM) (n=10), hyperbaric oxygenation (HBO) (n=10) and the combination of MDM and HBO (n=10). The comparison group included 16 people. All patients underwent neurophysiological (EEG, auditory event-related potentials) and neuropsychological examinations. Results. Marked EEG changes were noted in all patients. The domination of disturbances of functional activity on the diencephalic or mesodiencephalic levels was observed. After treatment, positive changes were found in 60% of patients. The positive dynamics was observed in 80% patients when the combination of mexidol, MDM and HBO was used. The negative dynamics was noted in 5 (12,5%) of patients of the main group, in particular when mexidol only was used. The results of the primary neuropsychological study revealed that cognitive impairment of different severity was found in 97,5% of patients of the main group and 100% of patients of the comparison group. After treatment, performance on neuropsychological tests improved by 62,5%, N200 and P300 latencies reduced, while the amplitudes increased, in the patients of the main group. Conclusion. The use of mexidol, MDM and HBO in the treatment of patients with encephalopathy due to poisoning with neurotoxicants on the stage of rehabilitation improved the indicators of functional brain activity and cognitive functions.

Keywords:

encephalopathy

acute poisoning with neurotoxicants

electroencephalography

auditory event-related potential (P300)

psychophysiological testing

mexidol

mesodiencephalic modulation

hyperbaric oxygenation

Authors:

Berezina I.Yu.

Sklifosovsky Research Institute for Emergency Medicine, Public Healthcare Institution of Moscow Healthcare Department, Moscow, Russia

Badalian A.V.

Moskovskiĭ gorodskoĭ NII skoroĭ meditsinskoĭ pomoshchi im. N.V. Sklifosovskogo

Sumskiĭ L.I.

Nauchno-issledovatel'skiĭ institut skoroĭ pomoshchi im. N.V. Sklifosovskogo

Goldfarb Yu.S.

Sklifosovsky Research Institute for Emergency Medicine, Public Healthcare Institution of Moscow Healthcare Department, Moscow, Russia;
Russian Medical Academy of Postgraduate Education, Federal Public Educational Institution of Additional Professional Postgraduate Education of Russian Federation Healthcare Ministry, Moscow, Russia

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