Cardiovascular Digital Health Journal (2021-04-01)

Machine learning enables noninvasive prediction of atrial fibrillation driver location and acute pulmonary vein ablation success using the 12-lead ECG

  • Giorgio Luongo, MSc,
  • Luca Azzolin, MSc,
  • Steffen Schuler, MSc,
  • Massimo W. Rivolta, PhD,
  • Tiago P. Almeida, PhD,
  • Juan P. Martínez, PhD,
  • Diogo C. Soriano, PhD,
  • Armin Luik, MD,
  • Björn Müller-Edenborn, MD,
  • Amir Jadidi, MD,
  • Olaf Dössel, PhD,
  • Roberto Sassi, PhD,
  • Pablo Laguna, PhD,
  • Axel Loewe, PhD

Journal volume & issue
Vol. 2, no. 2
pp. 126 – 136

Abstract

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Background: Atrial fibrillation (AF) is the most common supraventricular arrhythmia, characterized by disorganized atrial electrical activity, maintained by localized arrhythmogenic atrial drivers. Pulmonary vein isolation (PVI) allows to exclude PV-related drivers. However, PVI is less effective in patients with additional extra-PV arrhythmogenic drivers. Objectives: To discriminate whether AF drivers are located near the PVs vs extra-PV regions using the noninvasive 12-lead electrocardiogram (ECG) in a computational and clinical framework, and to computationally predict the acute success of PVI in these cohorts of data. Methods: AF drivers were induced in 2 computerized atrial models and combined with 8 torso models, resulting in 1128 12-lead ECGs (80 ECGs with AF drivers located in the PVs and 1048 in extra-PV areas). A total of 103 features were extracted from the signals. Binary decision tree classifier was trained on the simulated data and evaluated using hold-out cross-validation. The PVs were subsequently isolated in the models to assess PVI success. Finally, the classifier was tested on a clinical dataset (46 patients: 23 PV-dependent AF and 23 with additional extra-PV sources). Results: The classifier yielded 82.6% specificity and 73.9% sensitivity for detecting PV drivers on the clinical data. Consistency analysis on the 46 patients resulted in 93.5% results match. Applying PVI on the simulated AF cases terminated AF in 100% of the cases in the PV class. Conclusion: Machine learning–based classification of 12-lead-ECG allows discrimination between patients with PV drivers vs those with extra-PV drivers of AF. The novel algorithm may aid to identify patients with high acute success rates to PVI.

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