Reproducibility of heart rate variability characteristics measured on random 10-second ECG using joint symbolic dynamics

Muammar M. Kabir, Golriz Sedaghat, Jason Thomas, Larisa G. Tereshchenko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper we employed joint symbolic dynamics (JSD) approach to study reproducibility of heart rate variability characteristics measured on 2 randomly selected 10-second segments within 3-minute resting orthogonal ECG in 170 healthy participants. First, the ECG R-peaks were detected using parabolic fitting. Second, the respiratory signal was derived from orthogonal ECG X-lead using QRS slopes. Third, time series of R-R intervals and respiratory phases (calculated using Hilbert transform), were transformed into tertiary symbol vectors based on their successive changes and words of length '3' were formed. Bland-Altman analysis was used to assess the agreement between measured log-transformed JSD characteristics of HRV, and their reproducibility. Traditional HRV measures such as RR' interval changes showed a very high reproducibility. However, agreement between two 10-second JSD indices of HRV was low. Interestingly, a significant decrease in low-high alterations of HRV dynamics measured using JSD was observed when respiratory phase transition intervals were excluded (10s: 4.7±9.4 vs. 24.8±21.0%, p<0.0001; 3min: 9.8±8.1 vs. 24.8±12.3%, p<0.0001).

Original languageEnglish (US)
Title of host publicationComputing in Cardiology Conference, CinC 2016
PublisherIEEE Computer Society
Pages289-292
Number of pages4
Volume43
ISBN (Electronic)9781509008964
Publication statusPublished - Mar 1 2017
Event43rd Computing in Cardiology Conference, CinC 2016 - Vancouver, Canada
Duration: Sep 11 2016Sep 14 2016

Other

Other43rd Computing in Cardiology Conference, CinC 2016
CountryCanada
CityVancouver
Period9/11/169/14/16

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ASJC Scopus subject areas

  • Computer Science(all)
  • Cardiology and Cardiovascular Medicine

Cite this

Kabir, M. M., Sedaghat, G., Thomas, J., & Tereshchenko, L. G. (2017). Reproducibility of heart rate variability characteristics measured on random 10-second ECG using joint symbolic dynamics. In Computing in Cardiology Conference, CinC 2016 (Vol. 43, pp. 289-292). [7868736] IEEE Computer Society.