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Browsing by Author "Hornero, Fernando"

Now showing items 1-18 of 18

A cooled intraesophageal balloon to prevent thermal injury during endocardial surgical radiofrequency ablation of the left atrium: a finite element study

Berjano, Enrique; Hornero, Fernando (IOP Publishing, 2015-10-21)

[EN] Recent clinical studies on intraoperative monopolar radiofrequency ablation of atrial fibrillation have reported some cases of injury to the esophagus. The aim of this study was to perform computer simulations using ...
A three-dimensional human atrial model with fiber orientation. Electrograms and arrhythmic activation patterns relationship

Tobón Zuluaga, Catalina; Ruiz Villa, Carlos Alberto; Heidenreich, Elvio; Romero Pérez, Lucia; Hornero, Fernando; Saiz Rodríguez, Francisco Javier (Public Library of Science, 2013-02)

The most common sustained cardiac arrhythmias in humans are atrial tachyarrhythmias, mainly atrial fibrillation. Areas of complex fractionated atrial electrograms and high dominant frequency have been proposed as critical ...
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 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 ...
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 ...
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 ...
Cooled water-irrigated intraesophageal balloon to prevent thermal injury during cardiac ablation: Experimental study based on an agar phantom

Lequerica, Juan L.; Berjano, Enrique; Herrero, Maria; Melecio, Lemuel; Hornero, Fernando (IOP Publishing, 2008)

[EN] A great deal of current research is directed to finding a way to minimize thermal injury in the esophagus during radiofrequency catheter ablation of the atrium. A recent clinical study employing a cooling intraesophageal ...
Dominant frequency and organization index maps in a realistic three-dimensional computational model of atrial fibrillation

Tobón Zuluaga, Catalina; Rodriguez, Jose Felix; Ferrero De Loma-Osorio, José María; Hornero, Fernando; Saiz Rodríguez, Francisco Javier (Oxford University Press (OUP), 2012-11)

Aims To study, using simulation, the spectral characteristics of different patterns of atrial fibrillation (AF) at high spatial resolution. Dominant frequency (DF) and organization index (OI) maps have been used to approximate ...
Dynamic time warping applied to estimate atrial fibrillation temporal organization from the surface electrocardiogram

Alcaraz, Raul; Hornero, Fernando; Rieta, J J (Elsevier, 2013-09)

Atrial fibrillation (AF) is the most commonly diagnosed arrhythmia in clinical practice. However, the mechanisms responsible for its induction and maintenance still are not fully understood. To this respect, analysis of ...
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, ...
Esophageal temperature monitoring during radiofrequency catheter ablation: experimental study based on an agar phantom model

Rodriguez, Ignacio; Lequerica, Juan L.; Berjano, Enrique; Herrero, Maria; Hornero, Fernando (IOP Publishing, 2007-05)

[EN] Although previous studies have established the feasibility of monitoring esophageal temperature during radiofrequency cardiac ablation using an esophageal temperature probe (ETP), some questions remain regarding its ...
Impedance measurement to assess epicardial fat prior to RF intraoperative cardiac ablation: a feasibility study using a computer model

González-Suárez, Ana; Hornero, Fernando; Berjano, Enrique (IOP Publishing, 2010-11)

[EN] Radiofrequency (RF) cardiac ablation is used to treat certain types of arrhythmias. In the epicardial approach, efficacy of RF ablation is uncertain due to the presence of epicardial adipose tissue interposed between ...
Mathematical modeling of epicardial RF ablation of atrial tissue with overlying epicardial fat

González Suárez, Ana; Hornero, Fernando; Berjano, Enrique (Bentham Science, 2010-02)

[EN] The efficacy of treating atrial fibrillation by RF ablation on the epicardial surface is currently under question due to the presence of epicardial adipose tissue interposed between the ablation electrode and target ...
Noninvasive time and frequency predictors of long-standing atrial fibrillation early recurrence after electrical cardioversion

Alcaraz, Raúl; Hornero, Fernando; Rieta Ibañez, José Joaquín (wiley, 2011-05-23)

Background: Several clinical factors have been studied to predict atrial fibrillation (AF) recurrence after electrical cardioversion (ECV) with limited predictive value. Methods: A method able to predict robustly long-standing ...
Preoperative study of the surface ECG for the prognosis of atrial fibrillation maze surgery outcome at discharge

Hernández Alonso, Antonio; Alcaraz, Raul; Hornero, Fernando; Rieta, J J (IOP Publishing: Hybrid Open Access, 2014-07)

The Cox-maze surgery is an effective procedure for terminating atrial fibrillation (AF) in patients requiring open-heart surgery associated with another heart disease. After the intervention, regardless of the patient's ...
Reliability assessment of a cooled intraesophageal balloon to prevent thermal injury during RF cardiac ablation: an agar phantom study

Lequerica, Juan L.; Berjano, Enrique; Herrero, Maria; Hornero, Fernando (Blackwell Publishing, 2008)

[EN] Cooled Balloon Prevents Thermal Injury During RF Ablation. Introduction: The use of a cooled intraesophageal balloon has recently been proposed to minimize the risk of thermal injury in the esophagus during radiofrequency ...
Short-time regularity assessment of fibrillatory waves from the surface ECG in atrial fibrillation

Alcaraz, Raul; Hornero, Fernando; Martinez, Arturo; Rieta, J J (IOP Publishing: Hybrid Open Access, 2012-06)

This paper proposes the first non-invasive method for direct and short-time regularity quantification of atrial fibrillatory (f) waves from the surface ECG in atrial fibrillation (AF). Regularity is estimated by computing ...
Surface ECG organization time course analysis along onward episodes of paroxysmal atrial fibrillation

Alcaraz, Raul; Hornero, Fernando; Rieta, J J (Elsevier, 2011-07)

The complete understanding of the mechanisms leading to the initiation, maintenance and self-termination of atrial fibrillation (AF) still is an unsolved challenge for cardiac electrophysiology. Studies in which AF has ...