JOURNAL HOME CME HOME THIS MONTH PAST ISSUES ETOC COLLECTIONS
AUTHORS REVIEWERS EDITORIAL BOARD FEEDBACK RSS HELP
A&A International Anesthesia Research Society
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a colleague
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Renna, M.
Right arrow Articles by Gillbe, C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Renna, M.
Right arrow Articles by Gillbe, C.

Anesth Analg 2006;103:1049
© 2006 International Anesthesia Research Society
doi: 10.1213/01.ane.0000239044.54218.46

LETTER TO THE EDITOR

Editor-in-Chief Steven L. Shafer

BIS and the Electromyogram

Maurizio Renna, MD, FRCA, and Charles Gillbe, FRCA

Department of Anaesthesia; Royal Brompton Hospital; London, United Kingdom; maurizio.renna{at}imperial.ac.uk

To the Editor:

Liu et al. (1) recently described the effect of neuromuscular blockade on bispectral index (BIS) and entropy values. Their statement that "until now, no study has been conducted during the initial period of anesthetic induction" is incorrect. Several years ago, we reported electromyographic (EMG) effects on BIS during large-dose opioid induction (2), using fentanyl-induced muscular rigidity as a source of EMG "contamination" of BIS. Our findings mirrored those of Liu et al. (1). They found that placebo is associated with a smaller decrease in BIS than atracurium. We found that a larger dose of fentanyl (i.e., more rigidity) was associated with higher BIS values than a smaller dose of fentanyl (i.e., less rigidity), in the absence of neuromuscular blockade. We used version 3.4 of the BIS algorithm in our study, as version 4.0 used by Liu et al. was not available at that time.

REFERENCES

  1. Liu N, Chazot T, Huybrechts I, et al. The influence of a muscle relaxant bolus on bispectral and Datex-Ohmeda entropy values during propofol-remifentanil induced loss of consciousness. Anesth Analg 2005;101:1713–18.[Abstract/Free Full Text]
  2. Renna M, Wigmore T, Mofeez A, Gillbe C. Biasing effect of the electromyogram on BIS: a controlled study during high-dose fentanyl induction. J Clin Monit Comput 2002;17:377–81.[Medline]



This article has been cited by other articles:


Home page
 Anesth. Analg.Home page
N. Liu, T. Chazot, and M. Fischler
BIS and the Electromyogram
Anesth. Analg., October 1, 2006; 103(4): 1049 - 1050.
[Full Text] [PDF]

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a colleague
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Renna, M.
Right arrow Articles by Gillbe, C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Renna, M.
Right arrow Articles by Gillbe, C.

Lippincott, Williams & Wilkins Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999 HighWire Press