| Left atrial conduction along the coronary sinus during ectopic atrial tachycardia and atrial fibrillation: a study using correlation function analysis. | |
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MedLine Citation:
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PMID: 14760917 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: Correlation function analysis was applied to endocardial electrograms to investigate conduction patterns along the coronary sinus (CS) during sinus rhythm (SR) and atrial tachycardias. METHODS AND RESULTS: Eighteen recordings were obtained from 14 patients with supraventricular tachycardias. Five atrial fibrillation (AF) recordings were compared to 10 SR recordings and 3 ectopic atrial tachycardia (EAT) recordings. The maximum correlation coefficient was used to assess similarity between signals, i.e., if they originate from the same wavefront. The cumulative time delay, calculated as pairwise summation of interelectrode time delays, was used as an indicator of activation sequence along the CS. Method validation using SR showed right-to-left conduction with high correlations in 8 of 10 recordings indicating one single wavefront. EAT recordings showed consistent left-to-right conduction with left atrial foci and right-to-left with right atrial focus and lower correlations than SR. All 5 AF recordings showed predominantly left-to-right conduction direction, also with correlations lower than SR. CONCLUSION: (1) Correlation function analysis can be used to assess agreement between signals and direction of activation spread. (2) Due to the position of CS, the results can be used to derive mechanisms of interatrial conduction. (3) Consistency in electrical activity propagation along CS is common in AF. |
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Authors:
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Jonas Carlson; Susana Santos; Pyotr G Platonov; Ole Kongstad Rasmussen; Rolf Johansson; S Bertil Olsson |
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Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: Journal of cardiovascular electrophysiology Volume: 14 ISSN: 1045-3873 ISO Abbreviation: J. Cardiovasc. Electrophysiol. Publication Date: 2003 Oct |
Date Detail:
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Created Date: 2004-02-05 Completed Date: 2004-02-23 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 9010756 Medline TA: J Cardiovasc Electrophysiol Country: United States |
Other Details:
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Languages: eng Pagination: S148-53 Citation Subset: IM |
Affiliation:
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Department of Cardiology, University Hospital, Lund University, Lund, Sweden. Jonas.Carlson@kard.lu.se |
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| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms Atrial Fibrillation / physiopathology* Electrocardiography Heart / physiology* Heart Conduction System / physiopathology* Humans Linear Models Reproducibility of Results Retrospective Studies Signal Processing, Computer-Assisted Tachycardia, Atrioventricular Nodal Reentry / physiopathology Tachycardia, Ectopic Atrial / physiopathology* |
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