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Development of a catheter-based technique for endoluminal radiofrequency sealing of pancreatic duct
Ewertowska, Elzbieta (Universitat Politècnica de València. Departament d'Enginyeria Electrònica)
Andaluz Martínez, Anna (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Moll Sánchez, Xavier (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Aguilar Catalán, Adrià (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
García Arnas, Félix (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Fondevila, Dolors (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Quesada, R. (Universitat Pompeu Fabra. Departament de Ciències Experimentals i de la Salut)
Trujillo Guillén, Macarena (Universitat Politècnica de València. Departament d'Enginyeria Electrònica)
Burdío, Fernando (Hospital del Mar (Barcelona, Catalunya))
Berjano, Enrique (Universitat Politècnica de València. Departament d'Enginyeria Electrònica)

Date: 2019
Abstract: 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 (RF) sealing of the pancreatic duct. Materials and methods: We devised a novel RF ablation technique based on impedance-guided catheter pullback. First, bench tests were performed on ex vivo models to tune up the technique before the in vivo study, after which endoluminal RF sealing of a ∼10 cm non-transected pancreatic duct was conducted on porcine models using a 3 Fr catheter. After 30 days, sealing effectiveness was assessed by a permeability test and a histological analysis. Results: The RF technique was feasible in all cases and delivered ∼5 W of power on an initial impedance of 308 ± 60 Ω. Electrical impedance evolution was similar in all cases and provided guidance for modulating the pullback speed to avoid tissue sticking and achieve a continuous lesion. During the follow-up the animals rate of weight gain was significantly reduced (p < 0. 05). Apart from signs of exocrine atrophy, no other postoperative complications were found. At necropsy, the permeability test failed and the catheter could not be reintroduced endoluminally, confirming that sealing had been successful. The histological analysis revealed a homogeneous exocrine atrophy along the ablated segment in all the animals. Conclusions: Catheter-based RF ablation could be used effectively and safely for endoluminal sealing of the pancreatic duct. The findings suggest that a fully continuous lesion may not be required to obtain complete exocrine atrophy.
Grants: Ministerio de Economía y Competitividad TEC2014-52383-C3-R
Ministerio de Economía y Competitividad BES-2015-073285
Ministerio de Ciencia e Innovación RTI2018-094357-B-C21
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Language: Anglès
Document: Article ; recerca ; Versió publicada
Subject: Cirurgia veterinària ; Ablation ; Endolumina ; Pancreatic duct ; Radiofrequency ; Sealing
Published in: International Journal of Hyperthermia, Vol. 36 Núm. 1 (january 2019) , p. 677-686, ISSN 1464-5157

DOI: 10.1080/02656736.2019.1627585
PMID: 31317817


10 p, 2.8 MB

The record appears in these collections:
Articles > Research articles
Articles > Published articles

 Record created 2020-06-03, last modified 2022-04-26



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