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Browsing by Subject "Atrial fibrillation"

Now showing items 1-20 of 106

A Deep Learning Approach for Featureless Robust Quality Assessment of Intermittent Atrial Fibrillation Recordings from Portable and Wearable Devices

Huerta Herraiz, Álvaro; Martínez-Rodrigo, Arturo; Bertomeu-González, Vicente; Quesada, Aurelio; Rieta, J J; Alcaraz, Raúl (MDPI AG, 2020-07)

[EN] Atrial fibrillation (AF) is the most common heart rhythm disturbance in clinical practice. It often starts with asymptomatic and very short episodes, which are extremely difficult to detect without long-term monitoring ...
A novel wavelet-based filtering strategy to remove powerline interference from electrocardiograms with atrial fibrillation

García, M.; Martínez, Miguel; Ródenas, Juan; Rieta, J J; Alcaraz, R. (IOP Publishing, 2018)

[EN] Objective: The electrocardiogram (ECG) is currently the most widely used recording to diagnose cardiac disorders, including the most common supraventricular arrhythmia, such as atrial fibrillation (AF). However, ...
A robust wavelet-based approach for dominant frequency analysis of atrial fibrillation in body surface signals

Marques, V.G.; RODRIGO BORT, MIGUEL; Guillem Sánchez, María Salud; Salinet, J. (IOP Publishing, 2020-07)

[EN] Objective: Atrial dominant frequency (DF) maps undergoing atrial fibrillation (AF) presented good spatial correlation with those obtained with the non-invasive body surface potential mapping (BSPM). In this study, a ...
A Straightforward Methodology to Distinguish Complex Fractionated Atrial Electrograms of Paroxysmal from Persistent Atrial Fibrillation

Finotti, Emanuela; Ciaccio, Edward J.; Garan, Hasan; Bertomeu-González, Vicente; Alcaraz, Raúl; Rieta, J J (IEEE, 2020-10-30)

[EN] Many indices aimed at discriminating between paroxysmal and persistent atrial fibrillation (ParAF vs. PerAF) have been previously studied and assessed via statistical tests in order to suggest optimized approaches to ...
Alteration of the P-wave non-linear dynamics near the onset of paroxysmal atrial fibrillation

Martinez, Arturo; Abasolo, Daniel; Alcaraz, Raul; Rieta, J J (Elsevier, 2015-07)

The analysis of P-wave variability from the electrocardiogram (ECG) has been suggested as an early predictor of the onset of paroxysmal atrial fibrillation (PAP). Hence, a preventive treatment could be used to avoid the ...
Analysis of atrial fibrillation recidivity under successive attempts of electrical cardioversion based on fibrillatory wave amplitude and dominant frequency

Alcaraz Martínez, Raúl; Rieta, J J; Hornero, Fernando (2013)

Atrial fibrillation (AF) is the most common cardiac arrhythmia in clinical practice. One frequent and very effective alternative to revert AF back to a normal sinus rhythm (NSR) is external electrical cardioversion (ECV). ...
Análisis computacional de ablaciones virtuales e inserciones de vías de conducción rápida en un tejido auricular 2D

Puche García, Violeta (Universitat Politècnica de València, 2020-05-14)

[ES] La fibrilación auricular humana (FA) es la arritmia sostenida más común y se puede terminar mediante la ablación de regiones localizadas. De esta manera, una vez estudiados los mecanismos para la formación de fibrilación ...
Análisis del remodelado anatomoeléctrico auricular para la predicción del éxito de la ablación quirúrgica concomitante de la fibrilación auricular a largo plazo

Martin, Elio; Hornero, Fernando; Rieta, J J; Hernández Alonso, Antonio; Paredes, Federico; Mena, Armando; Gil, Oscar; Canovas, Sergio; Garcia, Rafael; Martinez Leon, Juan (Elsevier, 2016-05)

[EN] Objective: To identify preoperative parameters of anatomo-electrical atrial remodelling in order to identify the subgroup of patients more favourable to long-term sinus rhythm (SR) re-establishment after concomitant ...
Application of Hurst exponents to assess atrial reverse remodeling in paroxysmal atrial fibrillation

Julián Seguí, Matilde; Alcaraz, Raul; Rieta, J J (IOP Publishing: Hybrid Open Access, 2015-11)

Atrial fibrillation (AF) is the most common cardiac arrhythmia in clinical practice. Although its termination mechanisms are not still completely known, previous works have reported significant electrocardiographic differences ...
Application of the relative wavelet energy to heart rate independent detection of atrial fibrillation

García, Manuel; Ródenas García, Juan; Alcaraz, Raúl; Rieta, J J (Elsevier, 2016-07)

Background and Objectives: Atrial fibrillation (AF) is the most common sustained cardiac ar- rhythmia and a growing healthcare burden worldwide. It is often asymptomatic and may appear as episodes of very short duration; ...
Application of wavelet entropy to predict atrial fibrillation progression from the surface ECG

Alcaraz, Raúl; Rieta Ibañez, José Joaquín (Hindawi Publishing Corporation, 2012)

Atrial fibrillation (AF) is the most common supraventricular arrhythmia in clinical practice, thus, being the subject of intensive research both in medicine and engineering. Wavelet Entropy (WE) is a measure of the disorder ...
Arrhythmogenic Effects of Genetic Mutations Affecting Potassium Channels in Human Atrial Fibrillation: A Simulation Study

Belletti, Rebecca; Romero Pérez, Lucia; Martínez-Mateu, Laura; Cherry, Elizabeth M.; Fenton, Flavio H.; Saiz Rodríguez, Francisco Javier (Frontiers Media SA, 2021-05-31)

[EN] Genetic mutations in genes encoding for potassium channel protein structures have been recently associated with episodes of atrial fibrillation in asymptomatic patients. The aim of this study is to investigate the ...
Assessing the Stability of Complex Fractionated Atrial Electrograms for the Characterization of Atrial Substrate in Atrial Fibrillation

Finotti, Emanuela; Ciaccio, Edward J.; Garan, Hasan; Hornero, Fernando; Alcaraz, Raúl; Rieta, J J (IEEE, 2020-10-30)

[EN] Aimed at characterizing the atrial substrate in atrial fibrillation (AF), a wide number of indexes has been investigated on complex fractionated atrial electrograms (CFAEs). However, many times the assessment of CFAEs ...
Assessment of non-invasive time and frequency atrial fibrillation organization markers with unipolar atrial electrograms

Alcaraz, Raúl; Hornero, Fernando; Rieta, J J (IOP Publishing: Hybrid Open Access, 2011-01)

The standard electrocardiogram (ECG) is the most common non-invasive way to study atrial fibrillation (AF). In this respect, previous works have shown that the surface lead V 1 reflects mainly the dominant atrial frequency ...
Assisting Electrophysiological Substrate Quantification in Atrial Fibrillation Ablation

Vraka, Aikaterini; Hornero, Fernando; Osca, Joaquín; Faes, Luca; Alcaraz, Raúl; Rieta, J J (IEEE, 2019-11-23)

[EN] Catheter ablation (CA) is the most popular treatment of atrial fibrillation (AF) with good results in paroxysmal AF, while its efficiency is significantly reduced in persistent AF. With the equipment used for CA ...
Atrial fibrillation subtypes classification using the General Fourier-family Transform

Ortigosa, Nuria; Cano, O.; Ayala Gallego, Guillermo; Galbis Verdu, Antonio; Fernandez Rosell, Carmen (Elsevier, 2014-04)

Atrial fibrillation patients can be classified into paroxysmal, persistent and permanent attending to the temporal pattern of this arrhythmia. The surface electrocardiogram hides this differentiation. A classification ...
Atrial Fibrillation Surgical Ablation Long-term Outcome Prediction Just with One Lead of the Preoperative Surface Electrocardiogram

García, Manuel; Escribano, Pilar; Ródenas, Juan; Martínez-Iniesta, Miguel; Hornero, Fernando; Rieta, J J; Alcaraz, Raúl (IEEE, 2020-10-30)

[EN] To revert atrial fibrillation (AF) in patients requiring concomitant open-heart surgery, surgical ablation (SA) is one of the most effective procedures. However, this intervention is as- sociated with major side ...
Atrial low voltage areas: A comparison between atrial fibrillation and sinus rhythm

Andrés Lahuerta, Ana; Roberto, Carlos; Saiz Rodríguez, Francisco Javier; Cano, Óscar; Martínez-Mateu, Laura; Alonso, Pau; Saurí, Assumpció; Quesada, Aurelio; Osca, Joaquín (VM Media Sp zo.o. - VMGroup SK, 2022)

[EN] Background: Atrial fibrosis can promote atrial fibrillation (AF). Electroanatomic mapping (EAM) can provide information regarding local voltage abnormalities that may be used as a surrogate marker for fibrosis. Specific ...
Automatic quality electrogram assessment improves phase-based reentrant activity identification in atrial fibrillation

Costoya-Sánchez, Alejandro; Climent, Andreu M.; Hernández-Romero, Ismael; Liberos Mascarell, Alejandro; Fernández-Avilés, Francisco; Narayan, Sanjiv M.; Atienza, Felipe; Guillem Sánchez, María Salud; RODRIGO BORT, MIGUEL (Elsevier, 2020-02)

[EN] Identification of reentrant activity driving atrial fibrillation (AF) is increasingly important to ablative therapies. The goal of this work is to study how the automatically-classified quality of the electrograms ...
Balance between sodium and calcium currents underlying chronic atrial fibrillation termination: An in silico intersubject variability study

Liberos Mascarell, Alejandro; Bueno-Orovio, Alfonso; Rodrigo Bort, Miguel; Ravens, Ursula; Hernández-Romero, Ismael; Fernández-Avilés, Francisco; Guillem Sánchez, María Salud; Rodríguez López, Blanca; Climent, Andreu M. (Elsevier, 2016-12)

BACKGROUND Atrial remodeling as a result of long-standing persistent atrial fibrillation (AF) induces substrate modifications that lead to different perpetuation mechanisms than in paroxysmal AF and a reduction in the ...