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Frequency analysis of atrial fibrillation from surface electrocardiograms

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Author

Summary, in English

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Neither the natural history of AF nor its response to therapy are sufficiently predictable by clinical and echocardiographic parameters. Atrial fibrillatory frequency (or rate) can reliably be assessed from the surface electrocardiogram (ECG) using digital signal processing (filtering, subtraction of averaged QRST complexes, and power spectral analysis) and shows large inter-individual variability. This measurement correlates well with intraatrial cycle length, a parameter which appears to have primary importance in AF domestication and response to therapy. AF with a low fibrillatory rate is more likely to terminate spontaneously, and responds better to antiarrhythmic drugs or cardioversion while high rate AF is more often persistent and refractory to therapy. In conclusion, frequency analysis of AF seems to be useful for non-invasive assessment of electrical remodeling in AF and may subsequently

Publishing year

2004

Language

English

Pages

122-136

Publication/Series

Indian Pacing and Electrophysiology Journal

Volume

4

Issue

3

Document type

Journal article

Publisher

Indian Pacing and Electrophysiology Group

Topic

  • Cardiac and Cardiovascular Systems

Status

Published

ISBN/ISSN/Other

  • ISSN: 0972-6292