Authors: Tibor Balázs Romola Laczkó Eszter Bognár Serkan Akman Péter Nagy Endre Zima János Dobránszky Tamás SziliTörök
Publish Date: 2012/10/26
Volume: 36, Issue: 1, Pages: 13-18
Abstract
Radiofrequency catheter ablation was performed on porcine liver preparations in a 5–60s time range with 5 s increments applied at different lesion sites Each series was repeated four times for both catheters The lesion volume the delivered energy and the ablation power curves were analyzed in 96 ablationsThe delivered energy was higher and the lesion volume was significantly larger when using a goldtip catheter The lesion volume that was created with the Pt/Irtip electrode within 60 s was created after a shorter 40 s ablation period with the goldtip electrode Au 40 s 345 ± 75 mm3 vs Pt/Ir 60 s 328 ± 30 mm3The goldtip catheters had a lower tip temperature resulting in higher energy delivery due to the better thermoconductivity of the gold alloy A significantly higher lesion volume and a faster lesion creation were found for gold catheters as compared to Pt/Ir catheters Goldtip catheters can create the same adequate lesion within 333 less ablation time due to the higher values of delivered energy as compared to those observed with the use of Pt/Ir cathetersTB is a PhD student at the Department of Materials Science and Engineering Budapest University of Technology and Economics and an employee of BIOTRONIK Hungary Ltd Budapest SA is an employee of BIOTRONIK SE Co KG T SZT is a consultant of BIOTRONIKIn an in vitro study Balazs et al investigated the lesion formation in relation to the ablation time and power delivery with a 4mm nonirrigated platinumiridium Pt/Ir and goldtip catheters A significantly higher lesion volume and faster lesion creation were found with the goldtip catheter as compared to the Pt/Irtip catheter Whether the results are applicable also to catheters incorporating an openirrigation technology warrant further investigation
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