EEG fractal dimension combined with burst suppression ratio as a measure of depth of anesthesia

  • M. CusenzaEmail author
  • A. Accardo
  • A. Orsini
Conference paper
Part of the IFMBE Proceedings book series (IFMBE, volume 39)


This paper proposes an alternative index for the monitoring of depth of anesthesia. The study was carried out on 6 EEG recordings acquired during surgery under general anesthesia. Induction was provided by propofol, anesthesia was then maintained either with propofol or with sevoflurane under BIS control. The proposed FDSR parameter, combination of Higuchi’s fractal dimension and burst suppression ratio, is able to distinguish among different clinical states and detected two episodes of intraoperative awareness not highlighted by BIS. Moreover, due to its low computational complexity, FDSR is more suitable than BIS for real-time implementation. In conclusion, FDSR is a promising index for the monitoring of depth of anesthesia and the reduction of the incidence of intraoperative awareness.


general anesthesia awareness BIS Higuchi’s fractal dimension burst suppression ratio 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Industrial Engineering and Information TechnologyUniversity of TriesteTriesteItaly

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