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Browsing by Subject "Atrial fibrillation"

Now showing items 21-40 of 146

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 ...
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 Changes in P-Wave VCG Loops Following Pulmonary-Vein Isolation

Ortigosa, Nuria; Cano, Óscar; Sandberg, Frida (MDPI AG, 2021-03)

[EN] Atrial fibrillation is the most common type of cardiac arrhythmia in clinical practice. Currently, catheter ablation for pulmonary-vein isolation is a well-established treatment for maintaining sinus rhythm when ...
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 ...
Characterization of the Substrate Modification in Patients Undergoing Catheter Ablation of Atrial Fibrillation

Vraka, Aikaterini (Universitat Politècnica de València, 2023-01-20)

[ES] La fibrilación auricular (FA) es la arritmia cardíaca más común. A pesar de la gran popularidad de la ablación con catéter (AC) como tratamiento principal, todavía hay margen de mejora. Aunque las venas pulmonares ...
Clasificación automática de registros ECG para la detección de Fibrilación Auricular y otros ritmos cardiacos

Jiménez Serrano, Santiago (Universitat Politècnica de València, 2018-10-23)

[ES] La importancia clínica de las arritmias cardiacas está aumentando, junto con su incidencia y prevalencia, principalmente asociadas con el envejecimiento de la población. Entre estas enfermedades destaca la Fibrilación ...
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 ...
Clinical Decision Support System for the Multiparametric Stratification of Atrial Fibrillation Patients in Critical Care

Lacki, Alexander Stefan (Universitat Politècnica de València, 2024-12-01)

[ES] La fibrilación auricular (FA) es la arritmia cardíaca más común y afecta a más de 33 millones de pacientes en el mundo. A menudo se encuentra en unidades de cuidados intensivos, donde se asocia con hospitalizaciones ...
Combination of frequency- and time-domain characteristics of the fibrillatory waves for enhanced prediction of persistent atrial fibrillation recurrence after catheter ablation

Escribano, Pilar; Ródenas, Juan; García, Manuel; Arias, Miguel A.; Hidalgo, Víctor M.; Calero, Sofía; Rieta, J J; Alcaraz, Raúl (Elsevier, 2024-02-15)

[EN] Catheter ablation (CA) remains the cornerstone alternative to cardioversion for sinus rhythm (SR) restoration in patients with atrial fibrillation (AF). Unfortunately, despite the last methodological and technological ...
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 ...
Comparative Study of Methods for Cycle Length Estimation in Fractionated Electrograms of Atrial Fibrillation

Osorio, Diego; Vraka, Aikaterini; Moreno-Arribas, José; Bertomeu-González, Vicente; Alcaraz, Raúl; Rieta, J J (MDPI AG, 2022-10)

[EN] Atrial cycle length (CL) is an important feature for the analysis of electrogram (EGM) characteristics acquired during catheter ablation (CA) of atrial fibrillation (AF), the commonest cardiac arrhythmia. Nevertheless, ...
Computational Tools for Human Atrial Cardiomyocyte Modeling: Integration of Electro-Mechanical Coupling

Di Marco, Alessia (Universitat Politècnica de València, 2024-09-13)

[ES] Las enfermedades cardiovasculares son la principal causa de muerte a nivel mundial, siendo las arritmias uno de los principales trastornos asociados a estas condiciones. La fibrilación auricular (FA) surge como la ...
Cost-Effectiveness Mathematical Model to Evaluate the Impact of Improved Cardiac Ablation Strategies for Atrial Fibrillation Treatment

Sánchez-Périz, Ixeia; Barrachina Martínez, Isabel; Diaz-Carnicero, Javier; Climent, Andreu M.; Vivas-Consuelo, David (MDPI AG, 2023-02)

[EN] Atrial fibrillation (AF) is the most common form of cardiac arrhythmia. Despite the frequency of the disease, the treatment strategies for AF are inefficient. We developed a cost-effectiveness model to evaluate potential ...