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• W3132775832 startingPage "102472" @default.
• W3132775832 abstract "Localization of atrial flutter circuits is tedious. Knowledge of this information beforehand will aid clinicians assess and plan ablation operations in advance to improve efficacy. In this article, we develop a novel classifier to determine flutter circuit localization by exploiting the variability contained in beat-to-beat series of vectorcardiographic flutter loop parameters, related to the variability of the activation circuit. Resulting classifier performance is satisfactory (maximum accuracy 0.93 for sample size of 56, sensitivity and specificity of 0.87 and 1.00 using logistic regression). Using an original method for selection of the most relevant features, it is shown that right and left AFL variability is different (right AFL has larger variability compared to left AFL) regarding higher-order statistics. On the other hand, it is hypothesized that respiratory motion alongside physical location of the two atria introduces variability in different amounts in right and left flutter circuits. This constitutes a confounding source of variability and may explain differences between right and left variability. We verify this hypothesis by removing this variability related to respiratory motion and analyzing the changes in classifier performance and variability feature values. It was concluded that respiratory motion is not the origin of discriminatory variability, and that this variability possibly originates from the AFL itself." @default.
• W3132775832 created "2021-03-01" @default.
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• W3132775832 date "2021-04-01" @default.
• W3132775832 modified "2023-10-17" @default.
• W3132775832 title "Variability in the atrial flutter vectorcardiographic loops and non-invasive localization of circuits" @default.
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• W3132775832 doi "https://doi.org/10.1016/j.bspc.2021.102472" @default.
• W3132775832 hasPublicationYear "2021" @default.
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