Phase-averaged characterization of respiratory sinus arrhythmia pattern

American Journal of Physiology. Heart and Circulatory Physiology
O GiladS Akselrod

Abstract

A method for the accurate time-domain characterization of respiratory sinus arrhythmia (RSA) pattern is presented and applied to two groups of healthy subjects to lay the baseline of RSA patterns and to underlay their features: response to standing, stability in successive recordings, and individuality of the shape of RSA pattern. RSA pattern is evaluated by selective averaging of heart rate (HR) changes from multiple respiratory cycles over the respiratory phase and represents the complete modulating function of HR by respiration. The RSA pattern is evaluated with free respiration and even in cases of severe arrhythmia. Estimation error is 6-8% in magnitude, phase resolution is 0.2 rad, and sensitivity margin for respiratory-related HR variability (HRV) components is 1%. RSA magnitude, phase lag, and expiration-to-inspiration time ratio are derived in addition to the entire pattern. In a group of 10 healthy young adults, a phase lag difference of 11.4 +/- 8.5% (mean +/- SD, P < 0.004) was observed between supine and standing postures, possibly ascribed to breathing mechanics. A second group of 15 healthy young adults at supine rest showed stability of the RSA pattern in successive recordings (several weeks apart) as well as in...Continue Reading

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Citations

Feb 22, 2012·Medical & Biological Engineering & Computing·Sandun KodituwakkuRiccardo Barbieri
Mar 28, 2009·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Kobi KeissarSolange Akselrod
Feb 13, 2015·IEEE Transactions on Haptics·Takashi G SatoTakehiro Moriya
Feb 6, 2017·Pacing and Clinical Electrophysiology : PACE·Diego A HoffmannSimón Salzberg
Mar 23, 2017·IEEE Transactions on Bio-medical Engineering·Benjamin VandendriesscheFrank J Jacono
Oct 13, 2016·ERJ Open Research·Mathias BaumertSarah A Immanuel
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Jan 29, 2008·American Journal of Physiology. Heart and Circulatory Physiology·Kiyoshi KotaniYoshiharu Yamamoto
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Mar 17, 2010·American Journal of Physiology. Heart and Circulatory Physiology·P Y W SinY C Tzeng
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Jul 3, 2020·Dysphagia·Metin Yildiz, Serian Doma
Apr 15, 2020·Applied Psychophysiology and Biofeedback·Paul M LehrerVinay Vidali

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