Abstract
To assess the depth and effectiveness of the anesthesia is mainly guided by clinical signs such as heart rate,
blood pressure, tearing, sweating. However, these symptoms do not always accurately reflect the degree of
depression of the central nervous system under the influence of an anesthetic, and therefore is not a reliable
indicator of the state of consciousness in the perioperative period.
Among the currently existing methods of objective evaluation of the depth of anesthesia most developed
methods based on registration of electroencephalogram (EEG) or evoked potentials.
There are a number of commercial monitors, counting EEG derived indices for the original algorithms.
However, the diagnostic accuracy of these alternative, less studied indices or inferior, or not higher than that
for the bispectral index (BIS).
The most widely used in clinical practice to assess the depth of anesthesia monitor to use based bispectral
index. BIS system is empirically and statistically calculated algorithms assess the depth of sleep, based on the
analysis of a plurality of EEG. The first option BIS monitor continuously recorded EEG individual patient
compared with the existing data in the database system of the EEG 5000 adults who were under anesthesia
with conventional anesthetics.
Today BIS monitoring is used in clinical practice, surgical hospitals in more than 160 countries around the
world. This method is dedicated to more than 7,000 scientific and clinical publications in electronic databases
PubMed and MEDLINE. In Spain, Australia and New Zealand BIS is included in standard intraoperative
monitoring. In the US, the UK, Switzerland, Canada and other countries, the use of BIS-monitoring is
recommended associations of doctors-anesthesiologists.
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About the authors
- Diasamidze Kakhaber Enverovich, MD, PhD, DSc, Senior Research Associate;
- Yusupov Khalid El’darovich, Postgraduate;
- Rybka Mikhail Mikhailovich, Chief of Department