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Listar por autor "González Suárez, Ana"

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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. ...
Computational Modeling of Open-Irrigated Electrodes for Radiofrequency Cardiac Ablation Including Blood Motion-Saline Flow Interaction

González-Suárez, Ana; Berjano, Enrique; Guerra, Jose M.; Gerardo-Giorda, Luca (Public Library of Science, 2016-03-03)

[EN] Radiofrequency catheter ablation (RFCA) is a routine treatment for cardiac arrhythmias. During RFCA, the electrode-tissue interface temperature should be kept below 80°C to avoid thrombus formation. Open-irrigated ...
Computational Models and Experimentation for Radiofrequency-based Ablative Techniques

González Suárez, Ana (Universitat Politècnica de València, 2014-03-14)

Las técnicas ablativas basadas en energía por radiofrecuencia (RF) se emplean con el fin de lograr un calentamiento seguro y localizado en el tejido biológico. En los últimos años ha habido un rápido crecimiento en el ...
Computer modeling of radiofrequency cardiac ablation including heartbeat-induced electrode displacement

Pérez, Juan J; Nadal, Enrique; Berjano, Enrique; González Suárez, Ana (Elsevier, 2022-05)

[EN] Background: The state of the art in computer modeling of radiofrequency catheter ablation (RFCA) only considers a static situation, i.e. it ignores ablation electrode displacements induced by tissue movement due to ...
Computer modeling of radiofrequency cardiac ablation: 30 years of bioengineering research

González-Suárez, Ana; Pérez, Juan J; Irastorza, Ramiro M.; D Avila, Andre; Berjano, Enrique (Elsevier, 2022-02)

[EN] This review begins with a rationale of the importance of theoretical, mathematical and computational models for radiofrequency (RF) catheter ablation (RFCA). We then describe the historical context in which each model ...
Computer simulations of consecutive radiofrequency pulses applied at the same point during cardiac catheter ablation: Implications for lesion size and risk of overheating

Sánchez-Muñoz, Eugenio J.; Berjano, Enrique; González-Suárez, Ana (Elsevier, 2022-06)

[EN] Background and objectives: To study temperature distribution and lesion size during two repeated radiofrequency (RF) pulses applied at the same point in the context of RF cardiac ablation (RFCA). Methods: An in-silico ...
Differences in applied electrical power between full thorax models and limited domain models for RF cardiac ablation

Irastorza, Ramiro M.; Gonzalez-Suarez, Ana; Pérez, Juan J; Berjano, Enrique (Taylor & Francis, 2020-01-01)

[EN] Purpose:Most modeling studies on radiofrequency cardiac ablation (RFCA) are based on limited-domain models, which means the computational domain is restricted to a few centimeters of myocardium and blood around the ...
Diseño de un sistema de control electrónico para un dispositivo háptico basado en polímeros electroactivos de nueva generación del tipo iónico

Castellanos Gilabert, Álvaro (Universitat Politècnica de València, 2022-09-23)

[ES] El objeto del TFG es el diseño de un sistema electrónico capaz de excitar un polímero electroactivo en el contexto de un dispositivo háptico (por ejemplo un guante electrónico que trasmite sensaciones táctiles al ...
Disturbing Effect of Intra-Tissue Temperature Sensors in Pre-Clinical Experimental Studies of Radiofrequency Cardiac Ablation: A Computer-Based Modeling Study

Cuenca-Dacal, Luis; Berjano, Enrique; González-Suárez, Ana; Pérez, Juan J (MDPI AG, 2023-04-11)

[EN] Background: Preclinical studies on radiofrequency (RF) cardiac ablation (RFCA) use very small temperature sensors in specific positions in the tissue subjected to RF heating. Despite the sensors' small size, the ...
Effect of intracardiac blood flow pulsatility during radiofrequency cardiac ablation: computer modeling study

Parés, Cristina; Berjano, Enrique; González-Suárez, Ana (Taylor & Francis, 2021-01-01)

[EN] Purpose To assess the effect of intracardiac blood flow pulsatility on tissue and blood distributions during radiofrequency (RF) cardiac ablation (RFCA). Methods A three-dimensional computer model was used to ...
Estudio y desarrollo de iluminación autónoma para un trocar quirúrgico desechable

Rosal Aleixandre, Jesús (Universitat Politècnica de València, 2022-06-09)

[ES] Los trocares quirúrgicos son dispositivos médicos destinados a dar un acceso mínimamente invasivo a la cavidad peritoneal durante la cirugía laparoscópica. Hasta la fecha ninguno de ellos posee capacidad de iluminar ...
Estudio y desarrollo de un sistema electrónico para la medida de humedad relativa en la cavidad peritoneal de un paciente sometido a cirugía laparoscópica.

Fernández Ortega, Juan Carlos (Universitat Politècnica de València, 2022-07-14)

[ES] Durante la cirugía laparoscópica se insufla aire en el interior de la cavidad peritoneal del paciente. Este aire es a menudo seco y frío, lo que puede producir daños en los tejidos biológicos. Es por lo tanto ...
High-power short-duration vs. standard radiofrequency cardiac ablation: comparative study based on an in-silico model

Coderch-Navarro, Sergi; Berjano, Enrique; Cámara, Óscar; González-Suárez, Ana (Taylor & Francis, 2021-01-01)

[EN] Purpose While the standard setting during radiofrequency catheter ablation (RFCA) consists of applying low power for long times, a new setting based on high power and short duration (HPSD) has recently been suggested ...
How far the zone of heat-induced transient block extends beyond the lesion during RF catheter cardiac ablation

Pérez, Juan J; Berjano, Enrique; González Suárez, Ana (Taylor & Francis, 2023-01-02)

[EN] Purpose While radiofrequency catheter ablation (RFCA) creates a lesion consisting of the tissue points subjected to lethal heating, the sublethal heating (SH) undergone by the surrounding tissue can cause transient ...
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 ...
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 ...
In Silico Modelling to Assess the Electrical and Thermal Disturbance Provoked by a Metal Intracoronary Stent during Epicardial Pulsed Electric Field Ablation

González-Suárez, Ana; Pérez, Juan J; O Brien, Barry; Elahi, Adnan (MDPI AG, 2022-12)

[EN] Background: Pulsed Electric Field (PEF) ablation has been recently proposed to ablate cardiac ganglionic plexi (GP) aimed to treat atrial fibrillation. The effect of metal intracoronary stents in the vicinity of the ...
In-silico modeling to compare radiofrequency-induced thermal lesions created on myocardium and thigh muscle

Pérez, Juan J; Berjano, Enrique; González-Suárez, Ana (MDPI AG, 2022-07-16)

[EN] Beating heart (BH) and thigh muscle (TM) are two pre-clinical models aimed at studying the lesion sizes created by radiofrequency (RF) catheters in cardiac ablation. Previous experimental results have shown that thermal ...
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 ...
Numerical analysis of thermal impact of intramyocardial capillary blood flow during radiofrequency cardiac ablation

Pérez, Juan J; González Suárez, Ana; Berjano, Enrique (Taylor & Francis, 2018)

[EN] Purpose: The thermal effect of the intramyocardial blood perfusion on the size of lesions created by radiofrequency cardiac ablation (RFCA) has not been adequately studied to date. Our objective was to assess the ...