Uncoupling of cardiac and respiratory rhythm in atrial fibrillation
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Platiša, Mirjana M.Bojić, Tijana

Pavlovic, Sinisa U.
Radovanovic, Nikola N.
Kalauzi, Aleksandar

Article (Published version)

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Rearranged origin of heart rhythm in patients with atrial fibrillation (AF) influences the regulation of the heart and consequently the respiratory rhythm, and the bidirectional interaction of these rhythms not documented. Hence, we examined coupling of the RR interval and the respiration (Resp) signal by coherence, Granger causality and the cross-sample entropy method of time series analysis in patients with AF and a healthy control group. In healthy subjects, the influence of respiration on cardiac rhythm was found as increased coherence at the breathing frequency (BF) range, significantly stronger interaction and synchrony from Resp to RR than from RR to Resp. On the contrary, in patients with AF, coherence at BF diminished, there were no causal interactions between signals in both directions, which resulted in equally great asynchrony between them. In AF, the absence of full functionality of the sinoatrial node, as an integrator of neural cardiac control, resulted in diminished vag...al modulation of heart periods and consequently impaired bidirectional cardio-respiratory interaction.
Keywords:
atrial fibrillation / cardio-respiratory coupling / coherence / cross-sample entropy / Granger causality / heart rate / respirationSource:
Biomedical Engineering / Biomedizinische Technik, 2016, 61, 6, 657-663Projects:
- Development of new technology for production of red wine and diatery supplements reach with polyphenols with cardioprotective effects (RS-31020)
- Neurobiology of sleep in aging and disease - electroencephalographic markers and modeling in the estimation of disorder (RS-173022)
- An integral study to identify the regional genetic and environmental risk factors for the common noncommunicable diseases in the human population of Serbia - INGEMA_S (RS-41028)
DOI: 10.1515/bmt-2016-0057
ISSN: 0013-5585
PubMed: 27824611