Abstract
Purpose of the study: based on the analysis of the bispectral index (BIS-index), to assess the adequacy of the depth of anesthesia in patients with oncological profile. Material and methods. An analysis of BIS-monitoring was carried out during 77 surgical interventions in patients of the oncosurgical profile of the Grodno University Clinic. Results. 30 minutes after the start of surgery, a decrease in the concentration of Sevorane in the inhaled mixture to 0.8-0.6 vol% lead to a significant decrease in the minimum alveolar concentration (MAC) of the anesthetic. However, at the same time, the BIS-index during the operation did not go beyond the limits of acceptable values. There was a decrease in the BIS-index (p<0.05) only during induction anesthesia and during the formation of anesthesia in the first minutes of surgery (57.87 and 47.65 units). Conclusions. With a decrease in the concentration of inhalation anesthetic in the inhaled air to 0.8-0.6 vol% and, consequently, MAC to 0.6-0.7, no statistically significant differences were found in the increase in the BIS-index and in the decrease in the depth of anesthesia.
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