Assessment of joint interactions between respiration and baroreflex activity using joint symbolic dynamics in heart failure patients

Muammar M. Kabir; Elyar Ghafoori; Larisa G. Tereshchenko

doi:10.1109/CIC.2015.7411034

Assessment of joint interactions between respiration and baroreflex activity using joint symbolic dynamics in heart failure patients

Muammar M. Kabir, Elyar Ghafoori, Larisa G. Tereshchenko

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

In this paper we employed a novel approach based on joint symbolic dynamics (JSD) to study interaction between respiratory phase and baroreflex activity. Electrocardiogram (ECG) and blood pressure recordings from six participants with history of heart failure were included in this study. First, the ECG R-peaks and systolic blood pressure indices were detected using parabolic fitting. Second, the respiratory signal was derived from Frank orthogonal ECG leads using QRS slopes and R-wave angles. Third, time series of R-R intervals and systolic blood pressure (SBP) were extracted, and respiratory phases were obtained using the Hilbert transform. Subsequently, each series was transformed into binary symbol vectors based on their successive changes and words of length '2' were formed. Baroreflex patterns were studied using word combinations representing baroreflex activity for specific changes in respiratory phases. Baroreflex activity was significantly higher for alternating low-high/high-low heart rate and SBP during inspiration as compared to continuous increase or decrease in heart rate and SBP (wiSBP=10,wiHR=01,wRP=11: 39.1±9.3% vs. wiSBP=00,wiHR=11,wRP=11: 6.4±3.9%, p

Original language	English (US)
Title of host publication	Computing in Cardiology
Publisher	IEEE Computer Society
Pages	809-812
Number of pages	4
Volume	42
ISBN (Print)	9781509006854
DOIs	https://doi.org/10.1109/CIC.2015.7411034
State	Published - Feb 16 2016
Externally published	Yes
Event	42nd Computing in Cardiology Conference, CinC 2015 - Nice, France Duration: Sep 6 2015 → Sep 9 2015

Other

Other	42nd Computing in Cardiology Conference, CinC 2015
Country/Territory	France
City	Nice
Period	9/6/15 → 9/9/15

ASJC Scopus subject areas

Cardiology and Cardiovascular Medicine
Computer Science(all)

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10.1109/CIC.2015.7411034

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Kabir, MM, Ghafoori, E & Tereshchenko, LG 2016, Assessment of joint interactions between respiration and baroreflex activity using joint symbolic dynamics in heart failure patients. in Computing in Cardiology. vol. 42, 7411034, IEEE Computer Society, pp. 809-812, 42nd Computing in Cardiology Conference, CinC 2015, Nice, France, 9/6/15. https://doi.org/10.1109/CIC.2015.7411034

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Assessment of joint interactions between respiration and baroreflex activity using joint symbolic dynamics in heart failure patients

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