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 language | English (US) |
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Title of host publication | Computing in Cardiology Conference, CinC 2016 |
Publisher | IEEE Computer Society |
Pages | 289-292 |
Number of pages | 4 |
Volume | 43 |
ISBN (Electronic) | 9781509008964 |
State | Published - Mar 1 2017 |
Event | 43rd Computing in Cardiology Conference, CinC 2016 - Vancouver, Canada Duration: Sep 11 2016 → Sep 14 2016 |
Other
Other | 43rd Computing in Cardiology Conference, CinC 2016 |
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Country/Territory | Canada |
City | Vancouver |
Period | 9/11/16 → 9/14/16 |
ASJC Scopus subject areas
- General Computer Science
- Cardiology and Cardiovascular Medicine