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Listar por autor "Hernández Romero, Ismael"

Mostrando ítems 1-20 de 21

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An evaluation on the clinical outcome prediction of rotor detection in non-invasive phase maps

Fambuena-Santos, C.; Hernández-Romero, Ismael; Molero-Alabau, Rubén; Climent, Andreu M.; Guillem Sánchez, María Salud (2021-09-15)

[EN] Phase maps obtained from Electrocardiographic imaging (ECGI) have been used in the past for rotor identification and ablation guidance in atrial fibrillation (AF). In this study, we propose a new rotor detection algorithm ...
Analysis of the response of human iPSC-derived cardiomyocyte tissue to I CaL block. A combined in vitro and in silico approach

Dasí, Albert; Hernández-Romero, Ismael; Gómez, Juan F.; Climent, Andreu M.; Ferrero De Loma-Osorio, José María; Trenor Gomis, Beatriz Ana (Elsevier, 2021-10)

[EN] The high incidence of cardiac arrythmias underlines the need for the assessment of pharmacological therapies. In this field of drug efficacy, as in the field of drug safety highlighted by the Comprehensive in Vitro ...
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 ...
Automatic Quality Electrogram Assessment Improves Reentrant Activity Identification in Atrial Fibrillation

Costoya-Sánchez, Alejandro; Climent, Andreu M.; Hernández-Romero, Ismael; Liberos, Alejandro; Fernández-Avilés, Francisco; Narayan, Sanjiv M.; Atienza, Felipe; Guillem Sánchez, María Salud; Rodrigo, Miguel (IEEE, 2019-09-11)

[EN] Location of reentrant electrical activity responsible for driving atrial fibrillation (AF) is key to ablative therapies. The aim of this work is to study the effect of the quality of the electrograms (EGMs) used for ...
Clinical Characteristics and Electrophysiological Mechanisms Underlying Brugada ECG in Patients With Severe Hyperkalemia

Rivera-Juárez, Allan; Hernández-Romero, Ismael; Puertas, Carolina; Zhang-Wang, Serena; Sánchez-Álamo, Beatriz; Martins, Raphael; Figuera, Carlos; Guillem Sánchez, María Salud; Martínez Climent, Batiste Andreu; Fernández-Avilés, Francisco; Tejedor, Alberto; Jalife, José; Atienza, Felipe (John Wiley & Sons, 2019-02-05)

[EN] Background-Several metabolic conditions can cause the Brugada ECG pattern, also called Brugada phenotype (BrPh). We aimed to define the clinical characteristics and outcome of BrPh patients and elucidate the mechanisms ...
Detection of Atrial Fibrillation Driver Locations Using CNN and Body Surface Potentials

Cámara-Vázquez, Miguel Ángel; Hernández-Romero, Ismael; Morgado-Reyes, Eduardo; Guillem Sánchez, María Salud; Climent, Andreu M.; Barquero-Pérez, Óscar (2021-09-15)

[EN] Atrial fibrillation (AF) is characterized by complex and irregular propagation patterns, and AF onset locations and drivers responsible for its perpetuation are main targets for ablation procedures. Several Deep ...
Diseño de una red neuronal artificial para la extracción de características implícitas de la geometría auricular a partir de señales electrográficas

Cano Cabañero, Andrea (Universitat Politècnica de València, 2022-09-05)

[ES] En el presente trabajo se pretende diseñar y desarrollar una red neuronal artificial (RNA) volumétrica para la obtención de información implícita relacionada con la geometría auricular a partir de señales electrocar ...
Effects of Geometry in Atrial Fibrillation Markers Obtained With Electrocardiographic Imaging

Molero-Alabau, Rubén; Climent, Andreu M.; Hernández-Romero, Ismael; Liberos, Alejandro; Fernández-Avilés, Francisco; Atienza, Felipe; Guillem Sánchez, María Salud; Rodrigo, Miguel (IEEE, 2019-09-11)

[EN] Electrocardiographic imaging (ECGI) can characterise cardiac pathologies such as atrial fibrillation (AF) through specific markers based on frequency or phase analysis. In this study, the effect of the geometry of ...
Effects of torso mesh density and electrode distribution on the accuracy of electrocardiographic imaging during atrial fibrillation

Molero-Alabau, Rubén; Gonzalez-Ascaso, Ana; Hernández-Romero, Ismael; Lundbäck-Mompó, David; Andreu M. Climent; Guillem Sánchez, María Salud (Frontiers Media SA, 2022-08-29)

[EN] Introduction: Electrocardiographic Imaging (ECGI) allows computing the electrical activity in the heart non-invasively using geometrical information of the patient and multiple body surface signals. In the present ...
Electrocardiographic imaging including intracardiac information to achieve accurate global mapping during atrial fibrillation

Cámara-Vázquez, Miguel Ángel; Hernández-Romero, Ismael; Rodrigo, Miguel; Alonso-Atienza, Felipe; Figuera, Carlos; Morgado-Reyes, Eduardo; Atienza, Felipe; Guillem Sánchez, María Salud; Climent, Andreu M.; Barquero-Pérez, Óscar (Elsevier, 2021-02)

[EN] Atrial fibrillation (AF) is characterized by complex and irregular propagation patterns. Noninvasive electrocardiographic imaging (ECGI) has been tested during AF conditions with promising results. However, current ...
Filtering strategies of electrocardiographic imaging signals for stratification of atrial fibrillation patients

Molero-Alabau, Rubén; Hernández-Romero, Ismael; M. Climent, Andreu; Guillem Sánchez, María Salud (Elsevier, 2023-03)

[EN] Background and objective: Electrocardiographic imaging (ECGI) has been used for guiding atrial fibrillation (AF) ablation, identifying reentrant activity by phase analysis with promising results. The objective of ...
Modelización y análisis del efecto de la disociación de voltaje y calcio sobre las arritmias cardíacas

Hernández Romero, Ismael (Universitat Politècnica de València, 2015-06-02)

[EN] The occurrence of alternans in the waveform morphology of transmembrane potential and intracellular calcium and dissociation of these waves has been proposed as one of the main mechanisms of onset of cardiac arrhythmia ...
Non-Invasive Electrophysiological Mapping Entropy Predicts Atrial Fibrillation Ablation Efficacy Better Than Clinical Characteristics

De la Nava, A. S.; Fabregat, M. C.; Rodrigo, M.; Hernández, I.; Liberos, A.; Fernández-Avilés, F.; Guillem Sánchez, María Salud; Atienza, F.; Climent, Andreu M. (IEEE, 2019-09-11)

[EN] Success rate of atrial fibrillation (AF) ablation remains far from satisfactory. In this study, a 6 months AF freedom predictive model based on Fuzzy Entropy of non-invasive body surface potential maps is compared ...
Non-invasive Estimation of Atrial Fibrillation Driver Position With Convolutional Neural Networks and Body Surface Potentials

Cámara-Vázquez, Miguel Ángel; Hernández-Romero, Ismael; Morgado-Reyes, Eduardo; Guillem Sánchez, María Salud; Climent, Andreu M.; Barquero-Pérez, Oscar (Frontiers Media SA, 2021-10-14)

[EN] Atrial fibrillation (AF) is characterized by complex and irregular propagation patterns, and AF onset locations and drivers responsible for its perpetuation are the main targets for ablation procedures. ECG imaging ...
Non-invasive Spatial Mapping of Frequencies in Atrial Fibrillation: Correlation With Contact Mapping

Rodrigo, Miguel; Waddell, Kian; Magee, Sarah; Rogers, Albert J.; Alhusseini, Mahmood; Hernández-Romero, Ismael; Costoya-Sánchez, Alejandro; Liberos, Alejandro; Narayan, Sanjiv M. (Frontiers Media SA, 2021-01-06)

[EN] Introduction: Regional differences in activation rates may contribute to the electrical substrates that maintain atrial fibrillation (AF), and estimating them non-invasively may help guide ablation or select anti-arrhythmic ...
Noninvasive Assessment of Complexity of Atrial Fibrillation Correlation With Contact Mapping and Impact of Ablation

RODRIGO BORT, MIGUEL; Martínez Climent, Batiste Andreu; Hernández-Romero, Ismael; Liberos Mascarell, Alejandro; Baykaner, Tina; Rogers, Albert J.; Alhusseini, Mahmood; Wang, Paul J.; Fernández-Avilés, Francisco; Guillem Sánchez, María Salud; Narayan, Sanjiv M.; Atienza, Felipe (Ovid Technologies Wolters Kluwer -American Heart Association, 2020-03)

[EN] Background: It is difficult to noninvasively phenotype atrial fibrillation (AF) in a way that reflects clinical end points such as response to therapy. We set out to map electrical patterns of disorganization and ...
Optical imaging of voltage and calcium in isolated hearts: Linking spatiotemporal heterogeneities and ventricular fibrillation initiation

Hernández-Romero, Ismael; Guillem Sánchez, María Salud; Figuera, Carlos; Atienza, Felipe; Fernández-Avilés, Francisco; Martínez Climent, Batiste Andreu (Public Library of Science, 2019-05-14)

[EN] Background Alternans have been associated with the development of ventricular fibrillation and its control has been proposed as antiarrhythmic strategy. However, cardiac arrhythmias are a spatiotemporal phenomenon ...
Phase singularity point tracking for the identification of typical and atypical flutter patients: A clinical-computational study

Liberos Mascarell, Alejandro; RODRIGO BORT, MIGUEL; Hernández-Romero, Ismael; Quesada Dorador, Aurelio; Fernández-Avilés, Francisco; ATIENZA FERNANDEZ, FELIPE; Climent, Andreu M.; Guillem Sánchez, María Salud (Elsevier, 2019-01)

[EN] Atrial Flutter (AFL) termination by ablating the path responsible for the arrhythmia maintenance is an extended practice. However, the difficulty associated with the identification of the circuit in the case of atypical ...
Ranolazine-mediated attenuation of mechanoelectric feedback in atrial myocyte monolayers

Del-Canto, Irene; Gómez-Cid, Lidia; Hernández-Romero, Ismael; Guillem Sánchez, María Salud; Fernández-Santos, María Eugenia; Atienza, Felipe; Such, Luis; Fernández-Avilés, Francisco; Chorro, Francisco J.; Martínez Climent, Batiste Andreu (Frontiers Media SA, 2020-08-04)

[EN] Background Mechanical stretch increases Na(+)inflow into myocytes, related to mechanisms including stretch-activated channels or Na+/H(+)exchanger activation, involving Ca(2+)increase that leads to changes in ...
Solving Inaccuracies in Anatomical Models for Electrocardiographic Inverse Problem Resolution by Maximizing Reconstruction Quality

Rodrigo Bort, Miguel; Climent, Andreu M.; Liberos Mascarell, Alejandro; Hernández-Romero, Ismael; Arenal, A.; Bermejo, Javier; Fernández-Avilés, Francisco; Atienza, Felipe; Guillem Sánchez, María Salud (Institute of Electrical and Electronics Engineers, 2018-03)

[EN] Electrocardiographic Imaging has become an increasingly used technique for non-invasive diagnosis of cardiac arrhythmias, although the need for medical imaging technology to determine the anatomy hinders its introduction ...