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Browsing by Subject "Atrial fibrillation"

Now showing items 1-20 of 76

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, ...
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 ...
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 ...
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 ...
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 ...
Body surface localization of left and right atrial high-frequency rotors in atrial fibrillation patients: A clinical-computational study

Rodrigo Bort, Miguel; Guillem Sánchez, María Salud; Climent, Andreu M.; Pedrón Torrecilla, Jorge; Liberos Mascarell, Alejandro; Millet Roig, José; Fernandez-Aviles, Francisco; Atienza, Felipe; Berenfeld, Omer (Elsevier, 2014-09)

Background: Ablation is an effective therapy in atrial fibrillation (AF) patients in which an electrical driver can be identified. Objective: The aim of this study is to present and discuss a novel and strictly non-invasive ...
Characterization and Modeling of Atrioventricular Conduction during Atrial Fibrillation

Martínez Climent, Batiste Andreu (Universitat Politècnica de València, 2011-06-03)

La fibrilación auricular (FA) es una de las arritmias cardiacas más comunes, la cual afecta alrededor del 10% de la población de más de 70 años. En FA, los impulsos eléctricos auriculares generados por el nodo sinusal son ...
Characterization of atrial arrhythmias in body surface potential mapping: A computational study

Gonçalves Marques, Victor; RODRIGO BORT, MIGUEL; Guillem Sánchez, María Salud; Salinet, Joao (Elsevier, 2020-12)

[EN] Purpose: Atrial tachycardia (AT), flutter (AFL) and fibrillation (AF) are very common cardiac arrhythmias and are driven by localized sources that can be ablation targets. Non-invasive body surface potential mapping ...
Characterization of complex fractionated atrial electrograms by Sample Entropy: An international multi-center study

Cirugeda Roldán, Eva María; Novak, Daniel; Kremen, Vaclav; Cuesta Frau, David; Keller, Matthias; Luik, Armin; Srutova, Martina (MDPI, 2015-11)

Atrial fibrillation (AF) is the most commonly clinically-encountered arrhythmia. Catheter ablation of AF is mainly based on trigger elimination and modification of the AF substrate. Substrate mapping ablation of complex ...
Classification of paroxysmal and persistent atrial fibrillation in ambulatory ECG recordings

Alcaraz, Raúl; Sandberg, Frida; Sornmo, Leif; Rieta Ibañez, José Joaquín (Institute of Electrical and Electronics Engineers (IEEE), 2011-05)

The problem of classifying short atrial fibrillatory segments in ambulatory ECG recordings as being either paroxysmal or persistent is addressed by investigating a robust approach to signal characterization. The method ...
Comparative assessment of nonlinear metrics to quantify organization-related events in surface electrocardiograms of atrial fibrillation

Julián, M.; Alcaraz, R.; Rieta, J J (Elsevier, 2014-05-01)

Atrial fibrillation (AF) is today the most common sustained arrhythmia, its treatment being not completely satisfactory. Electrical activity organization analysis within the atria could play a key role in the improvement ...
Desarrollo de modelos de estiramiento y electromecánicos para evaluar el efecto de la dilatación auricular sobre el establecimiento de la fibrilación auricular

García Vicente, Clara (Universitat Politècnica de València, 2021-09-17)

[ES] Las enfermedades cardiacas conforman la primera causa de muerte en todo el planeta, siendo las arritmias uno de los principales trastornos relacionados con estas patologías. La fibrilación auricular (FA) es conocida ...