Paper Info
Title
HRV strongly depends on breathing. Are we questioning the right suspect?
Abstract
The fact that the heart rate variability (HRV) depends on breathing is well known. The HRV is an important phenomenon which reflects the functional state of the autonomous nervous system (ANS), although there are some doubts concerning the actual interpretation of spectral components of HRV and their postulated balance. The assessment of the functional state of the ANS is the task of paramount importance in risk stratification of cardiological patients. HRV is considered to depend mainly on the properties of the sinus node (SN), which achieves neurohumoral input from the ANS. Interestingly, there is growing evidence that the relation between the heart rate (HR) and breathing rate (BR) is really strong. The variety of breathing-related effects that are present in HRV is very rich, including respiratory sinus arrhythmia (RSA), cardiorespiratory synchronization and vivid heart rate response to breathing disorders. If the mean frequency of any of rhythms is changed, the other rhythm adjusts itself. This provokes the question on the actual source of the dynamics observed in the HRV. Is it possible that we observe mainly the dynamics of the respiratory rhythm which is just transduced by the heart effector? What might be the role of the intrinsic dynamics of this effector? Is the RSA a product of neural regulation or rather a by-product: what is its teleological role? In consequence: if we concentrate on the sinus node and its properties in order to understand the nature of the HRV - are we questioning the right suspect? The reasoning is supplied by suitable choice of literature and by the analysis of the computational model. Various consequences are discussed.
Year
DOI
Venue
2011
10.1109/IEMBS.2011.6091907
EMBC
Keywords
Field
DocType
neural regulation,electrocardiography,sinus node,medical disorders,heart effector,neurophysiology,vivid heart rate response,hrv,autonomous nervous system,respiratory sinus arrhythmia,pneumodynamics,medical signal processing,physiological models,breathing disorders,heart rate variability,breathing rate,cardiorespiratory synchronization,cardiological patients,risk stratification,respiratory rhythm,computational model,neurohumoral input,functional state,ans,synchronization,physiology,couplings,computer model
Vagal tone,Biology,Internal medicine,Heart rate variability,Cardiology,Respiratory rate,Breathing,Heart rate,Electrocardiography,Rhythm,Cardiorespiratory fitness
Conference
Volume
ISSN
ISBN
2011
1557-170X
978-1-4244-4122-8
Citations 
PageRank 
References 
0
0.34
0
Authors
1
Name
Order
Citations
PageRank
Teodor Buchner101.35