Evaluation of Bispectral Index time delay in response to anesthesia induction: an observational study

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Ferreira, AL (Author) Other; Joaquim Mendes (Author) FEUP; Nunes, CS (Author) Other; Amorim, P (Author) Other

Journal

Title: Revista Brasileira de Anestesiologia

Vol. 69

Pages: 377-382

ISSN: 0034-7094

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 4 Citations

Other information

Authenticus ID: P-00Q-WKW

DOI: 10.1016/j.bjan.2019.03.008

Abstract (EN): Background and objectives: According to the manufacturer, the Bispectral Index (BIS) has a processing time delay of 5-10 s. Studies addressing this have suggested longer delays. We evaluated the time delay in the Bispectral Index response. Methods: Based on clinical data from 45 patients, using the difference between the predicted and the real BIS, calculated during a fixed 3 minutes period after the moment the Bispectral Index dropped below 80 during the induction of general anesthesia with propofol and remifentanil. Results: The difference between the predicted and the real BIS was in average 30.09 +/- 18.73 s. Conclusion: Our results may be another indication that the delay in BIS processing may be much longer than stated by the manufacture, a fact with clinical implications. (C) 2019 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 6