Abstract
Background: The aim of this study was to examine atrial organization from vectorcardiograms (VCGs) derived from the surface ECG of atrial fibrillatory waves. Methods: We retrieved ECGs recorded during ventricular asystole from 22 patients with AF undergoing ablation of the AV junction. The synthesized VCG of each f-wave cycle of each ECG and its plane of best fit, described by azimuth and elevation angles relative to the frontal plane, were computed. Results: Fifteen of the 22 ECGs had at least 30% of the planes in a single 30-degree region of azimuth angles. Of these 15, 12 had the greatest percentage of planes with azimuth angles within 30 degrees of the sagittal plane; two were near the frontal plane; and one near the right anterior oblique plane. Conclusions: Varying degrees of organization were observed from VCGs of fibrillatory waves with the more organized examples having planes predominately near the sagittal plane.
Original language | English (US) |
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Pages (from-to) | 91-97 |
Number of pages | 7 |
Journal | Journal of Electrocardiology |
Volume | 37 |
Issue number | SUPPL. |
DOIs | |
State | Published - Oct 2004 |
Funding
This study was supported in part by grants from the Dr. Scholl Foundation, Northbrook, Illinois, and the O’Shaughnessy Foundation, St. Paul, MN.
Keywords
- Atrial fibrillation
- electrocardiography
- organization
- vectorcardiography
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine