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Falsely increased bispectral index during endoscopic shoulder surgery attributed to interferences with the endoscopic
Thomas M Hemmerling1, Brigitte Migneault
1Department of Anesthesiology, Centre Hospitalier de l'Université de Montréal (CHUM), Hôtel-Dieu, Université de Montréal, Québec, Canada. thomashemmerling@hotmail.com
Anesthesia and Analgesia
|November 29, 2002
Abstract
Implications:
Endoscopic shaver activity can cause falsely increased bispectral index (BIS) readings. Close observation of BIS during periods with no shaver activity will reveal the true BIS and can be used to titrate depth of anesthesia. The reason for these interferences remain unclear.