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MINERVA ANESTESIOLOGICA

A Journal on Anesthesiology, Resuscitation, Analgesia and Intensive Care


Official Journal of the Italian Society of Anesthesiology, Analgesia, Resuscitation and Intensive Care
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BRAIN FUNCTION MONITORING IN ANAESTHESIA  FREEfree


Minerva Anestesiologica 2000 May;66(5):386-8

Copyright © 2009 EDIZIONI MINERVA MEDICA

language: English

Bispectral analysis technology and equipment

Sennholz G.

From the ClinicalCentral Europe Aspect Medical System, Leiden, The Netherland


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The Bispectral Index or “BIS” is a sin­gle num­ber, com­posed ­from dif­fer­ent EEG fea­tures, ­using mul­ti­var­i­ate sta­tis­ti­cal meth­ods. It was ­designed for mon­i­tor­ing the ­depth of hyp­no­sis dur­ing anaesthe­sia and seda­tion. Empirically ­derived ­from the EEGs of ­more ­than 5,000 anaesthet­ised ­patients, the BIS ­reflects the ­effect of anaesthet­ics on the ­brain. Unlike uni­var­i­ate meas­ures, ­such as Spectral Edge Frequency or Median Frequency, the Bispectral Index is ­drug inde­pen­dent and chang­es ­with increas­ing dos­es of hyp­not­ics in an ­almost lin­e­ar way. Though sophis­ti­cat­ed tech­nol­o­gy, the A-2000 BIS mon­i­tor and the BIS sen­sor are ­easy to use and ­also ­allow non-­experts to mon­i­tor the ­depth of hyp­no­sis and seda­tion on a rou­tine ­basis.

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