Evaluation of brain bioelectrical activity during xenon-oxygen mixture inhalation

V.I. Potievskaya1, F.M. Shvetskiy2, M.B. Potievskiy3

FSBI “National Medical Research Radiological Center” of the Ministry of Health of the Russian Federation, Moscow

SBIH “Hospital for war veterans №2”, Moscow

FSBEI HE “Lomonosov Moscow State University”, Moscow

For correspondence: Vera I. Potievskaya, Ph.D., M.D., chief researcher «National Medical Research Radiology Center», Russian Federation Ministry of Healthcare; e-mail: vera.pot@mail.ru

For citation: Potievskaya VI, Shvetskiy FM, Potievskiy MB. Evaluation of brain bioelectrical activity during xenon-oxygen mixture inhalation. Alexander Saltanov Intensive Care Herald. 2019;1:94–9.

DOI: 10.21320/1818-474X-2019-1-94-99

Xenon is an inert gas used like inhalational anesthetic during different surgeries, including high-risk operations and for pain treatment caused by different factors. If concentration of the gas is less than 50 %, or the duration of the procedure is very short, no consciousness depression occurs. 20 healthy persons from 22 to 30 years old were undergone xenon/oxygen inhalation with concentration 70/30 % respectively for 3 minutes. Electroencephalography (EEG) was recorded before, during and 30 minutes later the procedure. For the data processing spectral analysis was used. Statistical analysis was performed by Wilcoxon and Page tests. As a result, significant increase in slow wave activity and reduction in alpha-rhythm activity were observed during and after the procedure as well as repartition of activity zones in brain similar to physiological sleep. This fact may be used in conduction of treatment and diagnostics procedures.

Keywords: xenon, inhalational anesthetics, mask inhalations of xenon-oxygen mixture, electroencephalography, sedation

Received: 07.10.2018


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To the question about factors influencing neuromuscular blockade

G.G. Bestaev, V.D. Slepushkin

North-Ossetian State Medical Academy, Vladikavkaz

For correspondence: Georgy Bestaev — assistant of Department of anesthesiology and critical care medicine of North-Ossetian State Medical Academy; e-mail: georbest@mail.ru

For citation: Bestaev GG, Slepushkin VD. To the question about factors influencing neuromuscular blockade. Alexander Saltanov Intensive Care Herald. 2018;2:36–9.

DOI: 10.21320/1818-474X-2018-2-36-39

It has long been known that the duration of the action of muscle relaxants is affected by a variety of factors, and to a greater extent this effect is observed when using non-depolarizing muscle relaxants of medium and long duration. Surprisingly, factors, influencing neuromuscular block, are not becoming the subject of scientific discussion and are not reflected in modern literature. It is absolutely obvious at the same time that the study of quantitative dynamics of neuromuscular block represents a significant scientific and practical interest. In the given literature review the most important factors will be considered and discussed.

Keywords: factors, muscle relaxants, neuromuscular block, inhalational anesthetics, smoking, electrolytes, temperature, circadian rhythm

Received: 07.02.2018


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