High Accuracy of Automatic Detection of Atrial Fibrillation Using Wavelet Transform of Heart Rate Intervals |
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Authors: | DAVID DUVERNEY,JEAN-MICHEL GASPOZ,VINCENT PICHOT,FRÉ DÉ RIC ROCHE,RICHARD BRION,ANESTIS ANTONIADIS,JEAN-CLAUDE BARTHÉ LÉ MY |
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Affiliation: | Service d'Exploration Fonctionnelle CardioRespiratoire, Laboratoire de Physiologie, Hopital Universitaire Nord, Saint-Etienne, France;, Clinique de Médecine II et Division de Cardiologie, Département de Médecine Interne, Hôpital Universitaire, Genève, Suisse;, Service de Cardiologie, Hopital D'Instruction des Armées, Desgenettes, 69275 Lyon;, Laboratoire de Modélisation et de calcul, LMC-IMAG, UniversitéJoseph Fourier, Tour IRMA, Grenoble, France |
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Abstract: | DUVERNEY, D., et al. : High Accuracy of Automatic Detection of Atrial Fibrillation Using Wavelet Transform of Heart Rate Intervals. Permanent and paroxysmal AF is a risk factor for the occurrence and the recurrence of stroke, which can occur as its first manifestation. However, its automatic identification is still unsatisfactory. In this study, a new mathematical approach was evaluated to automate AF identification. A derivation set of 30 24-hour Holter recordings, 15 with chronic AF (CAF) and 15 with sinus rhythm (SR), allowed the authors to establish specific RR variability characteristics using wavelet and fractal analysis. Then, a validation set of 50 subjects was studied using these criteria, 19 with CAF, 16 with SR, and 15 with paroxysmal AF (PAF); and each QRS was classified as true or false sinus or AF beat. In the SR group, specificity reached 99.9%; in the CAF group, sensitivity reached 99.2%; in the PAF group, sensitivity reached 96.1%, and specificity 92.6%. However, classification on a patient basis provided a sensitivity of 100%. This new approach showed a high sensitivity and a high specificity for automatic AF detection, and could be used in screening for AF in large populations at risk. |
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Keywords: | arrhythmia automatic atrial fibrillation detection holter system time frequency analysis fractional brownian motion |
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