Ventricular Activity Signal Removal in Atrial Electrograms of Atrial Fibrillation

Bahareh Abdi, Richard Hendriks, Alle-Jan van der Veen, Natasja S. de Groot

Abstract

Diagnosis and treatment of atrial fibrillation can benefit from various signal processing approaches employed on atrial electrograms. However, the performance and interpretation of these approaches get highly degraded by far-field ventricular activities (VAs) that distort the morphology of the pure atrial activities (AAs). In this study, we aim to remove VAs from the recorded unipolar electrogram while preserving the AA components. To do so, we have developed a framework which first removes the VA-containing segments and interpolates the remaining samples. This will also partly remove the atrial components that overlap with VA signals, e.g., during atrial fibrillation. To reconstruct the AA components, we estimate them from the removed VA-containing segments based on a low-rank and sparse matrix decomposition and add them back to the electrograms. The presented framework is of rather low complexity, preserves AA components, and requires only a single EGM recording. Instrumental comparison to template matching and subtraction and independent component analysis shows that the proposed approach leads to smoother results with better similarity to the true atrial signal.

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Paper Citation


in Harvard Style

Abdi B., Hendriks R., van der Veen A. and S. de Groot N. (2019). Ventricular Activity Signal Removal in Atrial Electrograms of Atrial Fibrillation.In Proceedings of the 12th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 4: BIOSIGNALS, ISBN 978-989-758-353-7, pages 179-184. DOI: 10.5220/0007388901790184


in Bibtex Style

@conference{biosignals19,
author={Bahareh Abdi and Richard Hendriks and Alle-Jan van der Veen and Natasja S. de Groot},
title={Ventricular Activity Signal Removal in Atrial Electrograms of Atrial Fibrillation},
booktitle={Proceedings of the 12th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 4: BIOSIGNALS,},
year={2019},
pages={179-184},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007388901790184},
isbn={978-989-758-353-7},
}


in EndNote Style

TY - CONF

JO - Proceedings of the 12th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 4: BIOSIGNALS,
TI - Ventricular Activity Signal Removal in Atrial Electrograms of Atrial Fibrillation
SN - 978-989-758-353-7
AU - Abdi B.
AU - Hendriks R.
AU - van der Veen A.
AU - S. de Groot N.
PY - 2019
SP - 179
EP - 184
DO - 10.5220/0007388901790184