Document Detail

Oscillatory patterns of respiration: consequences for the stability and control of cardiac electrophysiology.
MedLine Citation:
PMID:  22254714     Owner:  NLM     Status:  MEDLINE    
Periodic breathing patterns known as Central Sleep Apnea (CSA) are often observed in congestive heart failure. This phenomenon is associated with increased risk of sudden cardiac death, but the mechanism for that outcome has not been exposed. Endocardial electrograms were recorded during spontaneous episodes of CSR and PB in patients in conscious and unconscious states. Analysis exposed a regular bidirectional phase-walk in the relationship between respiration and arterial blood pressure. Recently developed signal processing techniques revealed that respiration also modulates cardiac repolarization properties at multiple simultaneous frequencies, and the effect was heterogeneous across measurement sites in both ventricles. These measurements offer unique evidence of the electro-physiological manifestations of these breathing patterns. Analysis of phase relationships suggested a mechanism by which the behavior may predispose patients to cardiac arrhythmias. Such predisposition would be easily measured to direct treatment priorities and improve risk stratification.
David G Western; Ben M Hanson; Jaswinder Gill; Peter Taggart
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2011     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2011  
Date Detail:
Created Date:  2012-01-18     Completed Date:  2012-06-12     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1949-52     Citation Subset:  IM    
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MeSH Terms
Blood Pressure
Computer Simulation
Heart Conduction System / physiopathology*
Heart Failure / complications,  physiopathology*
Models, Cardiovascular
Oscillometry / methods*
Respiratory Mechanics*
Respiratory Rate*
Sleep Apnea, Central / complications,  physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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