TY - GEN
T1 - Reproducibility of heart rate variability characteristics measured on random 10-second ECG using joint symbolic dynamics
AU - Kabir, Muammar M.
AU - Sedaghat, Golriz
AU - Thomas, Jason
AU - Tereshchenko, Larisa G.
N1 - Publisher Copyright:
© 2016 CCAL.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - 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).
AB - 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).
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U2 - 10.22489/cinc.2016.085-172
DO - 10.22489/cinc.2016.085-172
M3 - Conference contribution
AN - SCOPUS:85016101762
T3 - Computing in Cardiology
SP - 289
EP - 292
BT - Computing in Cardiology Conference, CinC 2016
A2 - Murray, Alan
PB - IEEE Computer Society
T2 - 43rd Computing in Cardiology Conference, CinC 2016
Y2 - 11 September 2016 through 14 September 2016
ER -