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In this work we perform a statistical study of organization and synchronization indices in electrogram (EGM) signals obtained during ablation surgery in patients with Atrial Fibrillation (AF). We have considered organization, synchronization and delay indices, obtaining by three different ways, spectral, cross-correlation and wavefront analysis: dominant frequency, fD, regularity index, IR, organization...
In this work the relationship between heart rate and several repolarization indices, including the QT interval and T wave morphology descriptors, has been investigated. A time-variant model has been proposed to describe the Ir to RR relationship, with Ir generically denoting one of the repolarization indices under study, and RR the running mean RR interval. The proposed methodology is applied to the...
Electrogram (EGM) delineation is an increasingly important task to be performed in implantable cardiac devices such as pacemakers and defibrillators. Reliable detection and of EGM components might help to minimize the risk of false detections. Efforts are therefore undertaken to examine whether existing ECG delineators can be adapted for the delineation of EGMs. One issue to be solved is the low sampling...
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