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Listar por palabra clave "Ablation"

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Accessory Pathway Localisation Optimisation In Silico Heart Model

Martí Roig, Adrián (Universitat Politècnica de València, 2024-10-10)

[ES] El síndrome de Wolff-Parkinson-White (WPW) representa la anomalía más común de las vías accesorias. Durante la cirugía de ablación, los médicos suelen utilizar catéteres de mapeo como el AdvisorTM HD Grid de Abbott, ...
Algorithms for Detection of Atrial Fibrillation Sources

Félix Iglesias, Jorge Ramón (Universitat Politècnica de València, 2015-02-13)

Atrial fibrillation (AF) is a cardiac arrhythmia with significant morbidity and mortality affecting more than 10% of people over 75 years. Clinical studies demonstrate that population aging and sedentary lifestyle will ...
Analytical Model Based on a Cylindrical Geometry to Study RF Ablation with Needle-Like Internally Cooled Electrode

López Molina, Juan Antonio; Rivera Ortun, María José; Berjano Zanón, Enrique (Hindawi Publishing Corporation, 2012)

Radiofrequency (RF) ablation with internally cooled needle-like electrodes is widely used in medical techniques such as tumor ablation. The device consists of a metallic electrode with an internal liquid cooling system ...
Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress

Pérez, Juan J; Ewertowska, Elzbieta; Berjano, Enrique (John Wiley & Sons, 2020-11)

[EN] Background and Objectives Radiofrequency (RF)-induced ablation can be carried out inside ducts and vessels by simultaneously dragging a bipolar catheter while applying RF power. Our objective was to characterize the ...
Could it be advantageous to tune the temperature controller during radiofrequency ablation? A feasibility study using theoretical models

Alba Martínez, José; Trujillo Guillen, Macarena; Blasco Giménez, Ramón Manuel; Berjano Zanón, Enrique (Informa Healthcare, 2011-09)

Purpose: To assess whether tailoring the Kp and Ki values of a proportional-integral (PI) controller during radiofrequency (RF) cardiac ablation could be advantageous from the point of view of the dynamic behaviour of the ...
Desarrollo de software para reconstrucción estéreo 3D

Cantos Trigo, Sinforiano Sebastián (Universitat Politècnica de València, 2019-11-15)

[ES] En misiones de exploración espacial, y en especial, en la reentrada de vehículos espaciales, la presencia de temperaturas extremadamente altas hace necesario el uso de sistemas te protección térmica. Estos materiales ...
Desarrollo de un método para la estimación de la ubicación de lugares mantenedores de la fibrilación auricular mediante problema inverso de la electrocardiografía mediante análisis de fase y modulaciones en fase y frecuencia

Ballester Hoyo, Estrella del Mar (Universitat Politècnica de València, 2021-01-14)

[ES] La Fibrilación Auricular (FA) es la arritmia más frecuente observada en clínica. En casos en los que esta patología no revierte debido a la actividad reentrante se suele recurrir al tratamiento por ablación mediante ...
Development of a catheter-based technique for endoluminal radiofrequency sealing of pancreatic duct

Ewertowska, Elzbieta; Andaluz, Anna; Moll, Xavier; Adrià Aguilar; Garcia, Felix; Fondevila, Dolors; Quesada, Rita; Trujillo Guillen, Macarena; Burdio, Fernando; Berjano, Enrique (Taylor & Francis, 2019-01-01)

[EN] Introduction: Endoluminal sealing of the pancreatic duct by glue or sutures facilitates the management of the pancreatic stump. Our objective was to develop a catheter-based alternative for endoluminal radiofrequency ...
Entropy at the right atrium as a predictor of atrial fibrillation recurrence outcome after pulmonary vein ablation

Cervigon, Raquel; Moreno, Javier; Garcia-Quintanilla, Jorge; Perez-Villacastin, Julian; Castells, Francisco (Walter de Gruyter GmbH, 2016-02)

[EN] Atrial fibrillation (AF) recurrence rates after successful ablation procedures are still high and difficult to predict. This work studies the capability of entropy measured from intracardiac recordings as an indicator ...
Granger Causality and Jensen-Shannon Divergence to Determine Dominant Atrial Area in Atrial Fibrillation

Cervigón, Raquel; Castells, Francisco; Gómez-Pulido, José Manuel; Pérez-Villacastín, Julián; Moreno, J. (MDPI AG, 2018)

[EN] Atrial fibrillation (AF) is already the most commonly occurring arrhythmia. Catheter pulmonary vein ablation has emerged as a treatment that is able to make the arrhythmia disappear; nevertheless, recurrence to ...
How coagulation zone size is underestimated in computer modeling of RF ablation by ignoring the cooling phase just after RF power is switched off

Irastorza, Ramiro Miguel; Trujillo Guillen, Macarena; Berjano, Enrique (John Wiley & Sons, 2017)

[EN] All the numerical models developed for radiofrequency ablation so far have ignored the possible effect of the cooling phase (just after radiofrequency power is switched off) on the dimensions of the coagulation zone. ...
How intramyocardial fat can alter the electric field distribution during Pulsed Field Ablation (PFA): Qualitative findings from computer modeling.

Pérez, Juan J.; González-Suárez, Ana (Public Library of Science, 2023-11-02)

[EN] Even though the preliminary experimental data suggests that cardiac Pulsed Field Ablation (PFA) could be superior to radiofrequency ablation (RFA) in terms of being able to ablate the viable myocardium separated from ...
Identification of Dominant Excitation Patterns and Sources of Atrial Fibrillation by Causality Analysis

Rodrigo Bort, Miguel; Climent, A.M.; Liberos Mascarell, Alejandro; Calvo, D.; Fernandez-Aviles, F.; Berenfeld, O.; Atienza, F.; Guillem, M.S (Springer Verlag (Germany), 2016-08)

Burden of atrial fibrillation (AF) can be reduced by ablation of sources of electrical impulses driving AF but driver identification is still challenging. This study presents a new methodology based on causality analysis ...
La práctica de la limpieza con láser en materiales metálicos: Hierro, cobre y plata

Folgado Da Silveira Dos Santos Martins, Maria Inês (Universitat Politècnica de València, 2013-05-12)

[ES] La constante y rápida evolución de las técnicas de limpieza de objetos con valor simbólico y de representación social-cultural-histórica-artística ha desembocado en una enorme variedad de posibles metodologías prácticas ...
Modifications in Ventricular Fibrillation and Capture Capacity Induced by a Linear Radiofrequency Lesion

Chorro, Francisco J.; Pelechano Ribes, Francisca; Trapero, Isabel; Ibañez Catala, Xavier; Such-Miquel, Luis; Tormos Ferrando, Álvaro; Guerrero, Juan; Canoves, Joaquin; Mainar, Luis; Millet Roig, José; Alberola, Antonio; Such, Luis (Elsevier, 2012-02)

[EN] Introduction and objectives: An analysis was made of the effects of a radiofrequency-induced linear lesion during ventricular fibrillation and the capacity to capture myocardium through high-frequency pacing. Methods: ...
Non-invasive characterisation of macroreentrant atrial tachycardia types from a vectorcardiographic approach with the slow conduction region as a cornerstone

Ruipérez-Campillo, Samuel; Castrejón, Sergio; Martínez, Marcel; Cervigón, Raquel; Meste, Olivier; Merino, José Luis; Millet Roig, José; Castells, Francisco (Elsevier, 2021-03)

[EN] Background and objectives: Macroreentrant atrial tachyarrhythmias (MRATs) can be caused by different reentrant circuits. The treatment for each MRAT type may require ablation at different sites, either at the right ...
Propagation of meandering rotors surrounded by areas of high dominant frequency in persistent atrial fibrillation

Salinet, Joao; Schlindwein, Fernando S.; Stafford, Peter; Almeida, Tiago P.; Li, Xin; Vanheusden, Frederique; Guillem Sánchez, María Salud; Ng, André (Elsevier, 2017-09)

[EN] [Background] Identification of arrhythmogenic regions remains a challenge in persistent atrial fibrillation (persAF). Frequency and phase analysis allows identification of potential ablation targets. [Objective] This ...
Re-entry survival analysis and ground risk assessment of space debris considering by-products generation

Park, Seong-Hyeon; Navarro-Laboulais, J.; Leyland, Pénélope; Mischler, Stefano (Elsevier, 2021-02)

[EN] Space debris that re-enter the Earth's atmosphere can be partially or fully ablated along the trajectory path after hitting the atmosphere layers, once these become denser (approximately below 82 km). This paper ...
Reconstrucción fotogramétrica de una probeta utilizada en el túnel de viento de plasma del VKI

Marín García, José Antonio (Universitat Politècnica de València, 2019-11-07)

[ES] Durante las misiones espaciales, los sistemas de protección térmica (TPS) de los vehículos espaciales juegan un papel crucial durante la etapa de entrada atmosférica. Debido a la forma roma de estos cuerpos y a las ...
Resonadores de anillo partido. Acople a líneas de transmisión y sensibilidad

Sánchez Pastor, Jesús (Universitat Politècnica de València, 2017-12-02)

Study of the behaviour of Split Ring Resonators and their Complementary counterpart when coupled to a Transmission Line (microstrip line and coplanar waveguide), as well as their capacity to distinguish between different ...