<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>In this study, the inverse solution with a single dipole was computed to localize the premature ventricular contraction (PVC) origin from long term multiple leads ECG measurements on fourteen patients. The stability of the obtained results was studied with respect to the preprocessing of signals used as an input to the inverse solution and the complexity of the torso model. Two methods were used for the baseline drift removal. After an averaging of the heartbeats, the influence of the retention or elimination of the remaining offset at the beginning of the PVC signal was examined. The inverse computations were performed using both homogeneous and inhomogeneous patient-specific torso models. It was shown that the remaining offset in the averaged signals at the beginning of the PVC signal had the most significant impact on the stability of the resulting position within the ventricles. Its elimination stabilizes the location of the results, decreases the sensitivity to the torso model complexity and decreases the sensitivity to the primary baseline drift removal method. The additional offset correction decreased the mean distance between the results for all patients from 17-18 mm to 1-2 mm, regardless of the baseline drift removal method or the torso model complexity.</p>
</abstract>

In this study, the inverse solution with a single dipole was computed to localize the premature ventricular contraction (PVC) origin from long term multiple leads ECG measurements on fourteen patients. The stability of the obtained results was studied with respect to the preprocessing of signals used as an input to the inverse solution and the complexity of the torso model. Two methods were used for the baseline drift removal. After an averaging of the heartbeats, the influence of the retention or elimination of the remaining offset at the beginning of the PVC signal was examined. The inverse computations were performed using both homogeneous and inhomogeneous patient-specific torso models. It was shown that the remaining offset in the averaged signals at the beginning of the PVC signal had the most significant impact on the stability of the resulting position within the ventricles. Its elimination stabilizes the location of the results, decreases the sensitivity to the torso model complexity and decreases the sensitivity to the primary baseline drift removal method. The additional offset correction decreased the mean distance between the results for all patients from 17-18 mm to 1-2 mm, regardless of the baseline drift removal method or the torso model complexity.

The Importance of ECG Offset Correction for Premature Ventricular Contraction Origin Localization from Clinical Data

Department of Arrhythmias and Cardiostimulation

Slovak University of Technology in Bratislava

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

In this study, the inverse solution with a single dipole was computed to localize the premature ventricular contraction (PVC) origin from long term multiple...

The Importance of ECG Offset Correction for Premature Ventricular Contraction Origin Localization from Clinical Data

Pubblicato online: 13 ott 2022

Pagine: 246 - 252

Ricevuto: 23 gen 2022

Accettato: 30 mag 2022

DOI: https://doi.org/10.2478/msr-2022-0031

Parole chiave
Body surface potential mapping, inverse solution, ECG signal processing, QRS beginning assessment, signal offset

© 2022 Jana Svehlikova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The Importance of ECG Offset Correction for Premature Ventricular Contraction Origin Localization from Clinical Data

Pubblicato online: 13 ott 2022

Pagine: 246 - 252

Ricevuto: 23 gen 2022

Accettato: 30 mag 2022

DOI: https://doi.org/10.2478/msr-2022-0031

Parole chiaveBody surface potential mapping, inverse solution, ECG signal processing, QRS beginning assessment, signal offset

© 2022 Jana Svehlikova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Parole chiave
Body surface potential mapping, inverse solution, ECG signal processing, QRS beginning assessment, signal offset