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Esophageal temperature monitoring during radiofrequency catheter ablation: experimental study based on an agar phantom model

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Esophageal temperature monitoring during radiofrequency catheter ablation: experimental study based on an agar phantom model

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dc.contributor.author Rodriguez, Ignacio es_ES
dc.contributor.author Lequerica, Juan L. es_ES
dc.contributor.author Berjano, Enrique es_ES
dc.contributor.author Herrero, Maria es_ES
dc.contributor.author Hornero, Fernando es_ES
dc.date.accessioned 2020-09-24T12:29:18Z
dc.date.available 2020-09-24T12:29:18Z
dc.date.issued 2007-05 es_ES
dc.identifier.issn 0967-3334 es_ES
dc.identifier.uri http://hdl.handle.net/10251/150645
dc.description.abstract [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 efficacy. The aims of this study were to study the effect of the location of the ETP on the temperature reached, and to test the characteristics of ETP as used in clinical practice. We constructed an agar phantom to model the thermal and electrical characteristics of the biological tissues (left atrium, esophagus and connective tissue). The ETP was positioned at 6.5 mm from an ablation electrode and at distances of 0, 5, 10, 15, 20 mm from the catheter axis. A thermocouple was located on the probe to measure the actual temperature of the external esophageal layer during the ablations (55 degrees C, 60 s). The mean temperatures reached at the thermocouple were significantly higher than those measured by the ETP (48.3 +/- 1.9 degrees C versus 39.6 +/- 1.1 degrees C). The temperature values measured with the ETP were significantly lower when the probe was located further from the catheter axis ( up to 2.5 degrees C lower when the distance from the probe - catheter axis was 2 cm). The dynamic calibration of the ETP showed a mean value for the time constant of 8 s. In conclusion, the temperature measured by the ETP always underestimates the temperature reached in the thermocouple. This fact can be explained by the distance gap between the thermocouple and probe and by the dynamic response of the ETP. The longer the distance between the ETP and catheter axis, the higher is the temperature difference. es_ES
dc.description.sponsorship We would like to thank the R+D+i Linguistic Assistance Office at the Universidad Politécnica of Valencia for its help in revising this paper. This work was partially supported by the Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica del Ministerio de Educación y Ciencia of Spain (TEC 2005-04199/TCM) and by an R&D contract (CSIC-20060633) between Edwards Lifescience Ltd. and the Spanish Council for Scientific Research (CSIC). es_ES
dc.language Inglés es_ES
dc.publisher IOP Publishing es_ES
dc.relation CSIC/CSIC-20060633 es_ES
dc.relation MINISTERIO DE EDUCACION /TEC2005-04199 es_ES
dc.relation.ispartof Physiological Measurement es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Agar phantom es_ES
dc.subject Esophageal temperature probe es_ES
dc.subject Esophagus es_ES
dc.subject Left atrium es_ES
dc.subject Radiofrequency ablation es_ES
dc.subject Temperature measurement es_ES
dc.subject.classification TECNOLOGIA ELECTRONICA es_ES
dc.title Esophageal temperature monitoring during radiofrequency catheter ablation: experimental study based on an agar phantom model es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1088/0967-3334/28/5/001 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica es_ES
dc.description.bibliographicCitation Rodriguez, I.; Lequerica, JL.; Berjano, E.; Herrero, M.; Hornero, F. (2007). Esophageal temperature monitoring during radiofrequency catheter ablation: experimental study based on an agar phantom model. Physiological Measurement. 28(5):453-463. https://doi.org/10.1088/0967-3334/28/5/001 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1088/0967-3334/28/5/001 es_ES
dc.description.upvformatpinicio 453 es_ES
dc.description.upvformatpfin 463 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 28 es_ES
dc.description.issue 5 es_ES
dc.identifier.pmid 17470980 es_ES
dc.relation.pasarela S\31917 es_ES
dc.contributor.funder MINISTERIO DE EDUCACION es_ES
dc.contributor.funder Universitat Politècnica de València es_ES
dc.contributor.funder Consejo Superior de Investigaciones Científicas es_ES


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