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Wavefront detection from intra-atrial recordings

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7 Author(s)
Richter, U. ; Dept of Electr. & Inf. Technol., Lund Univ., Lund ; Stridh, M. ; Husser, D. ; Cannom, D.S.
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The present study deals with detection of intra-atrial wavefronts from atrial activation times in adjacent bipolar electrograms. A statistic of the delays within each wave-front was calculated and served as a basis for quantifying the wavefront consistency as well as the propagation of the electrical activity along the catheter. The database consisted of 19 patients for which five electrograms were recorded simultaneously during 10 s. The analysis resulted in 38plusmn2 complete wavefronts per patient, i.e., wavefronts consisting of one activation from each recording site. Two parameters were evaluated for quantifying wavefront consistency, which together with the propagation profile well reflect the overall wavefront timing. In most cases, electrical activity was observed first in the high septal right atrium, and then spread along the catheter.

Published in:

Computers in Cardiology, 2007

Date of Conference:

Sept. 30 2007-Oct. 3 2007

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