Phase-averaged characterization of respiratory sinus arrhythmia pattern

Gilad, Oded; Swenne, Cees A.; Davrath, Linda R.; Akselrod, Solange

doi:10.1152/ajpheart.00366.2004

Cited by 45 publications

(14 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The decrease in coherence power is in agreement with other steady-state methods, which quantified the RSA magnitude in supine and standing positions (Saul et al 1991;Gilad et al 2005).…”

Section: Discussionsupporting

confidence: 87%

Coherence analysis between respiration and heart rate variability using continuous wavelet transform

Keissar

Davrath

Akselrod

2009

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

The continuous wavelet transform (CWT) is specifically efficient in the analysis of transient and non-stationary signals. As such, it has become a powerful candidate for time-frequency analysis of cardiovascular variability. CWT has already been established as a valid tool for the analysis of single cardiovascular signals, providing additional insights into the autonomous nervous system (ANS) activity and its control mechanism. Intercorrelation between cardiovascular signals elucidates the function of ANS central control and the peripheral reflex mechanisms. Wavelet transform coherence (WTC) can provide insight into the transient linear order of the regulatory mechanisms, via the computation of time-frequency maps of the time-variant coherence. This paper presents a framework for applying WTC for quantitative analysis of coherence in cardiovascular variability research. Computer simulations were performed to estimate the accuracy of the WTC estimates and a method for determining the coherence threshold for specific frequency band was developed and evaluated. Finally, we demonstrated, in two representative situations, the dynamic behaviour of respiration sinus arrhythmia through the analysis of the WTC between heart rate and respiration signals. This emphasizes that CWT and its application to WTC is a useful tool for dynamic analysis of cardiovascular variability.

show abstract

“…The decrease in coherence power is in agreement with other steady-state methods, which quantified the RSA magnitude in supine and standing positions (Saul et al 1991;Gilad et al 2005).…”

Section: Discussionsupporting

confidence: 87%

Coherence analysis between respiration and heart rate variability using continuous wavelet transform

Keissar

Davrath

Akselrod

2009

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

show abstract

“…(5), depends on the position of the body. Actually, both the RSA pattern and the relative phase between the ABP and the HR depend on the position of the body [ 10 , 37 , 39 , 53 ]. With the change of the body position not only the RSA pattern would change, but also the whole pattern would be shifted by 1 s with respect to the inspiration onset.…”

Section: Discussionmentioning

confidence: 99%

A quantitative model of relation between respiratory-related blood pressure fluctuations and the respiratory sinus arrhythmia

Buchner

2018

Med Biol Eng Comput

View full text Add to dashboard Cite

In order to propose an interpretation of recent experimental findings concerning short-term variability of arterial blood pressure (ABP), heart rate variability (HRV), and their dependence on body posture, we develop a qualitative dynamical model of the short-term cardiovascular variability at respiratory frequency (HF). It shows the respiratory-related blood pressure fluctuations in relation to the respiratory sinus arrhythmia (RSA). Results of the model-based analysis show that the observed phenomena may be interpreted as buffering of the respiratory-related ABP fluctuations by heart rate (HR) fluctuations, i.e., the respiratory sinus arrhythmia. A paradoxical enhancement (PE) of the fluctuations of the ABP in supine position, that was found in experiment, is explained on the ground of the model, as an ineffectiveness of control caused by the prolonged phase shift between the the peak of modulation of the pulmonary flow and the onset of stimulation of the heart. Such phasic changes were indeed observed in some other experimental conditions. Up to now, no other theoretical or physiological explanation of the PE effect exists, whereas further experiments were not performed due to technical problems. Better understanding of the short-term dynamics of blood pressure may improve medical diagnosis in cardiology and diseases which alter the functional state of the autonomous nervous system.

show abstract

“…RSA analysis was performed on ECG and thoracic respiratory inductance belt signals, using the phase-averaging technique proposed by G ilad et al [21]. In brief, this method quantifies the magnitude of the R-R interval discursion in the ECG from its mean value with respect to the respiratory cycle.…”

Section: Methodsmentioning

confidence: 99%

The effect of adenotonsillectomy for childhood sleep apnoea on cardiorespiratory control

et al. 2016

View full text Add to dashboard Cite

The efficacy of adenotonsillectomy for relieving obstructive sleep apnoea symptoms in children has been firmly established, but its precise effects on cardiorespiratory control are poorly understood.In 375 children enrolled in the Childhood Adenotonsillectomy Trial, randomised to undergo either adenotonsillectomy (n=194) or a strategy of watching waiting (n=181), respiratory rate, respiratory sinus arrhythmia and heart rate were analysed during quiet, non-apnoeic and non-hypopnoeic breathing throughout sleep at baseline and at 7 months using overnight polysomnography.Children who underwent early adenotonsillectomy demonstrated an increase in respiratory rate post-surgery while the watchful waiting group showed no change. Heart rate and respiratory sinus arrhythmia were comparable between both arms. On assessing cardiorespiratory variables with regard to normalisation of clinical polysomnography findings during follow-up, heart rate was reduced in children who had resolution of obstructive sleep apnoea syndrome, while no differences in their respiratory rate or respiratory sinus arrhythmia were observed.Adenotonsillectomy for obstructive sleep apnoea increases baseline respiratory rate during sleep. Normalisation of apnoea–hypopnoea index, spontaneously or via surgery, lowers heart rate. Considering the small average effect size, the clinical significance is uncertain.

show abstract

Phase-averaged characterization of respiratory sinus arrhythmia pattern

Cited by 45 publications

References 29 publications

Coherence analysis between respiration and heart rate variability using continuous wavelet transform

Coherence analysis between respiration and heart rate variability using continuous wavelet transform

A quantitative model of relation between respiratory-related blood pressure fluctuations and the respiratory sinus arrhythmia

The effect of adenotonsillectomy for childhood sleep apnoea on cardiorespiratory control

Contact Info

Product

Resources

About