Comparison of linear and non-linear analysis of heart rate variability in sedated cardiac surgery patients

I Korhonen, LT Mainardi, H Yppärilä, T Musialowicz

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

6 Citations (Scopus)

Abstract

Heart rate variability (HRV) provides a noninvasive method to monitor functioning of the autonomous nervous system. HRV has been proposed as a potential tool for objective assessment of the level of sedation in critical care. In this paper we studied whether different linear and non-linear analysis methods may discriminate different levels of sedation in cardiac surgery patients. In addition we studied the interrelationships between the different parameters. The results show that HRV is modified by changes in the level of sedation, and that it is not completely recovered by the next day after the cardiac surgery. Both linear time and frequency domain parameters, and non-linear parameters discriminate the different levels, but especially the method based on Poincare plot analysis seems promising. As different parameters are closely correlated, a sub-set of parameters may be sufficient in the quantification of HRV in sedation.

Original languageEnglish
Title of host publicationProceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vols 1-4
Place of PublicationNEW YORK
PublisherIEEE
Pages496-499
Number of pages4
ISBN (Print)0-7803-7211-5
Publication statusPublished - 2001
Externally publishedYes
Publication typeA4 Article in a conference publication
Event23rd Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society - ISTANBUL, Turkey
Duration: 25 Oct 200128 Oct 2001

Publication series

NamePROCEEDINGS OF ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY
PublisherIEEE
Volume23
ISSN (Print)1094-687X

Conference

Conference23rd Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society
Country/TerritoryTurkey
Period25/10/0128/10/01

Keywords

  • heart rate variability
  • level of sedation
  • intensive care
  • Poincare plot
  • entropy

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