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Listar por palabra clave "Catheter ablation"

Mostrando ítems 1-20 de 26

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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 ...
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 ...
Black-box modeling to estimate tissue temperature during radiofrequency catheter cardiac ablation: feasibility study on an agar phantom model

Blasco-Giménez, Ramón; Lequerica, Juan L.; Herrero, María; Hornero, Fernando; Berjano, Enrique (IOP Publishing, 2010-04)

[EN] The aim of this work was to study linear deterministic models to predict tissue temperature during radiofrequency cardiac ablation (RFCA) by measuring magnitudes such as electrode temperature, power and impedance ...
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 ...
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 Analysis of Different Methods of Modeling the Thermal Effect of Circulating Blood Flow During RF Cardiac Ablation

González Suárez, Ana; Berjano, Enrique (Institute of Electrical and Electronics Engineers (IEEE), 2016-02)

Our aim was to compare the different methods of modeling the effect of circulating blood flow on the thermal lesion dimensions created by radio frequency (RF) cardiac ablation and on the maximum blood temperature. ...
Detection of Dominant Reentries in Multichannel Electrograms of Atrial Fibrillation

Vraka, Aikaterini; Osorio, Diego; Bertomeu-González, Vicente; Ravelli, Flavia; Alcaraz, Raúl; Rieta, J J (IEEE, 2019-11-23)

[EN] Algorithms developed so far for the detection of local activation waves (LAWs) in electrograms (EGMs) of atrial fibrillation (AF) analyze each channel of the catheter separately, while dominant reentries of AF are ...
Electrical and thermal effects of esophageal temperature probes on radiofrequency catheter ablation of atrial fibrillation: results from a computational modeling study

Pérez, Juan J; D Avila, Andre; Aryana, Arash; Berjano, Enrique (Blackwell Publishing, 2015)

[EN] Electrical and Thermal Effects of Esophageal Temperature Probes IntroductionLuminal esophageal temperature (LET) monitoring is commonly employed during catheter ablation of atrial fibrillation (AF) to detect high ...
Electrocardiographic Imaging for Atrial Fibrillation: A Perspective From Computer Models and Animal Experiments to Clinical Value

Salinet, Joao; Molero-Alabau, Rubén; Schlindwein, Fernando S.; Karel, Joël; Rodrigo, Miguel; Rojo-Álvarez, José Luis; Berenfeld, Omer; Climent, Andreu M.; Zenger, Brian; Vanheusden, Frederique; Siles Paredes, Jimena Gabriela; MacLeod, Rob; Atienza, Felipe; Guillem Sánchez, María Salud; Cluitmans, Matthijs; Bonizzi, Pietro (Frontiers Media SA, 2021-04-30)

[EN] Electrocardiographic imaging (ECGI) is a technique to reconstruct non-invasively the electrical activity on the heart surface from body-surface potential recordings and geometric information of the torso and the heart. ...
Electrocardiographic Spectral Features for Long-Term Outcome Prognosis of Atrial Fibrillation Catheter Ablation

Alcaraz, Raúl; Hornero, Fernando; Rieta, J J (Springer Verlag (Germany), 2016-11)

Atrial fibrillation (AF) is the most common arrhythmia in routine clinical practice. Despite many years of research, its mechanisms still are not well understood, thus reducing the effectiveness of AF treatments. Nowadays, ...
Immuno-Electrophysiological Mechanisms of Functional Electrical Connections Between Recipient and Donor Heart in Patients With Orthotopic Heart Transplantation Presenting With Atrial Arrhythmias

Herweg, Bengt; Nellaiyappan, Madhan; Welter-Frost, Allan M.; Tran, Thanh; Mabry, George; Weston, Kathryn; Tobón, Catalina; Saiz Rodríguez, Francisco Javier; Noujaim, Sami; Weston, Mark W. (Ovid Technologies Wolters Kluwer -American Heart Association, 2021-04)

[EN] BACKGROUND: The formation of recipient-to donor atrio-atrial connections (AAC) in patients after orthotopic heart transplantation (OHT) is poorly understood. We sought to investigate the mechanisms of atrial ...
Noninvasive Localization of Maximal Frequency Sites of Atrial Fibrillation by Body Surface Potential Mapping

Guillem Sánchez, María Salud; Climent, Andreu M.; Millet Roig, José; Arenal, Ángel; Fernandez-Aviles, Francisco; Jalife, José; Atienza, Felipe; Berenfeld, Omer (American Heart Association, 2013-01)

Background—Ablation of high-frequency sources in patients with atrial fibrillation (AF) is an effective therapy to restore sinus rhythm. However, this strategy may be ineffective in patients without a significant dominant ...
Novel Time-Frequency Features of the Fibrillatory Waves Improve Catheter Ablation Outcome Prediction of Persistent Atrial Fibrillation

Escribano, Pilar; Ródenas, Juan; Arias, Miguel A.; Langley, Philip; Rieta, J J; Alcaraz, Raúl (IEEE, 2020-10-30)

[EN] Despite its limited long-term success rate, catheter ablation (CA) is still the first-line treatment for patients suffering from persistent atrial fibrillation (AF). Preoperative prediction on the procedure¿s outcome ...
Parallel Study on Surface and Invasive Recordings Across Catheter Ablation Steps of Paroxysmal Atrial Fibrillation

Vraka, Aikaterini; Hornero, Fernando; Quesada, Aurelio; Ravelli, Flavia; Alcaraz, Raúl; Rieta, J J (IEEE, 2021-11-19)

[EN] Catheter ablation (CA) is the star treatment of atrial fibrillation (AF). However, important issues regarding its procedure have only been superficially explored. While universal CA effect is assessed, the role of ...
Practical Considerations for the Application of Nonlinear Indices Characterizing the Atrial Substrate in Atrial Fibrillation

Finotti, Emanuela; Quesada, Aurelio; Ciaccio, Edward J.; Garan, Hasan; Hornero, Fernando; Alcaraz, Raúl; Rieta, J J (MDPI AG, 2022-09)

[EN] Atrial fibrillation (AF) is the most common cardiac arrhythmia, and in response to increasing clinical demand, a variety of signals and indices have been utilized for its analysis, which include complex fractionated ...
Preoperative Prediction of Catheter Ablation Outcome in Persistent Atrial Fibrillation Patients through Spectral Organization Analysis of the Surface Fibrillatory Waves

Escribano Cano, Pilar; Ródenas, Juan; García, Manuel; Arias, Miguel A.; Hidalgo, Víctor M.; Calero, Sofía; Rieta, J J; Alcaraz, Raúl (MDPI AG, 2022-10)

[EN] Catheter ablation (CA) is a commonly used treatment for persistent atrial fibrillation (AF). Since its medium/long-term success rate remains limited, preoperative prediction of its outcome is gaining clinical interest ...
Radiofrequency Ablation Using a Novel Insulated-Tip Ablation Catheter Can Create Uniform Lesions Comparable in Size to Conventional Irrigated Ablation Catheters While Using a Fraction of the Energy and Irrigation

Aryana, Arash; Irastorza, Ramiro M.; Berjano, Enrique; Cohen, Richard J.; Kraus, Jeffrey; Haghighi-Mood, Ali; Reddy, Vivek Y.; D Avila, Andre (Blackwell Publishing, 2022-06)

[EN] Introduction: During radiofrequency ablation (RFA) using conventional RFA catheters (RFC), similar to 90% of the energy dissipates into the bloodstream/surrounding tissue. We hypothesized that a novel insulated-tip ...
Reliable Paroxysmal Atrial Fibrillation Substrate Assessment During Sinus Rhythm Through Optimal Estimation of Local Activation Waves Dynamics

Vraka, Aikaterini; Hornero, Fernando; Quesada, Aurelio; Faes, Luca; Alcaraz, Raúl; Rieta, J J (IEEE, 2020-10-30)

[EN] The analysis of coronary sinus (CS) electrograms (EGMs) during catheter ablation (CA) of atrial fibrillation (AF) is highly important for AF substrate evaluation. However, channels of the CS catheter may be affected ...
Short-Time Estimation of Fractionation in Atrial Fibrillation with Coarse-Grained Correlation Dimension for Mapping the Atrial Substrate

Vraka, Aikaterini; Hornero, Fernando; Bertomeu-Gonzalez, Vicente; Osca, Joaquin; Alcaraz, Raul; Rieta, J J (MDPI AG, 2020-02-19)

[EN] Atrial ¿brillation (AF) is currently the most common cardiac arrhythmia, with catheter ablation (CA) of the pulmonary veins (PV) being its ¿rst line therapy. Ablation of complex fractionated atrial electrograms (CFAEs) ...