Effects of open-irrigated radiofrequency ablation catheter design on lesion formation and complications : in vitro comparison of 6 different devices
Guerra, José M. (Universitat Autònoma de Barcelona. Departament de Medicina)
Jorge, Esther (Universitat Autònoma de Barcelona. Departament de Biologia Cel·lular, de Fisiologia i d'Immunologia)
Raga, Silvia (Hospital de la Santa Creu i Sant Pau (Barcelona, Catalunya))
Gálvez-Montón, C. (Hospital de la Santa Creu i Sant Pau (Barcelona, Catalunya))
Alonso-Martín, C. (Hospital de la Santa Creu i Sant Pau (Barcelona, Catalunya))
Rodríguez-Font, E. (Hospital de la Santa Creu i Sant Pau (Barcelona, Catalunya))
Cinca, Juan (Hospital de la Santa Creu i Sant Pau (Barcelona, Catalunya))
Viñolas, X. (Hospital de la Santa Creu i Sant Pau (Barcelona, Catalunya))

Fecha:	2013
Resumen:	METHODS AND RESULTS: Six catheters were tested (Biosense Webster Thermocool, Boston Scientific Open irrigated, St. Jude CoolPath, St. Jude CoolPath Duo, Biosense Webster Thermocool SF, St. Jude Cool Flex) at 20 and 35 W power-control, under 2 different blood flows (0. 1 and 0. 5 m/s) and at 2 target durations (30 and 60 seconds). A total of 601 lesions were made in 26 in vitro preparations. The tip temperature profile showed significant differences between the catheters (P < 0. 001) with the Thermocool SF registering the lowest. Only the surface diameter and the depth at maximum diameter of the lesion were influenced by the design of the ablation electrode. The lesion volume did not show significant differences between catheters for any power, application duration or blood flow condition. Char and pops occurred more often at 35 W with only slight differences between the catheters. INTRODUCTION: Open-irrigated radiofrequency ablation catheters with slight differences in tip architecture are widely used, although limited comparative data are available. The purpose of this study was to compare the lesion size and potential complications produced by commercially available open-irrigated catheters in an in vitro porcine heart model. CONCLUSIONS: Tip design of the 6 different irrigated catheters does not affect the lesion total volume, although a slight difference in lesion geometry in terms of surface diameter and depth at maximum diameter is present. The catheters show a slight different in vitro safety profile.
Derechos:	Tots els drets reservats.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió acceptada per publicar
Publicado en:	Journal of cardiovascular electrophysiology, Vol. 24 Núm. 10 (january 2013) , p. 1157-1162, ISSN 1540-8167

DOI: 10.1111/jce.12175

26 p, 1.2 MB

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