Ablation time efficiency and lesion volume - In vitro comparison of 4 mm, non irrigated, gold- and platinum-iridium-tip radiofrequency ablation catheters

Tibor Balázs, Romola Laczkó, Eszter Bognár, Serkan Akman, Péter Nagy, E. Zima, János Dobránszky, Tamás Szili-Török

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Purpose: We investigated the development of in vitro lesion formation in relation to ablation time and power delivery using 4-mm, non-irrigated, platinum-iridium (Pt/Ir), and gold-tip catheters. Methods: Radiofrequency catheter ablation was performed on porcine liver preparations in a 5-60-s 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 ablations. Results: The delivered energy was higher and the lesion volume was significantly larger when using a gold-tip catheter. The lesion volume that was created with the Pt/Ir-tip electrode within 60 s was created after a shorter 40 s ablation period with the gold-tip electrode (Au, 40 s, 345 ± 75 mm3 vs. Pt/Ir, 60 s, 328 ± 30 mm3). Conclusion: The gold-tip catheters had a lower tip temperature resulting in higher energy delivery due to the better thermo-conductivity 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. Gold-tip catheters can create the same adequate lesion within 33.3 % less ablation time due to the higher values of delivered energy as compared to those observed with the use of Pt/Ir catheters.

Original languageEnglish
Pages (from-to)13-18
Number of pages6
JournalJournal of Interventional Cardiac Electrophysiology
Volume36
Issue number1
DOIs
Publication statusPublished - Jan 2013

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Iridium
Catheter Ablation
Platinum
Gold
Catheters
Electrodes
Gold Alloys
In Vitro Techniques
Swine
Temperature
Liver

Keywords

  • Ablation time
  • Gold-tip electrode
  • Lesion volume
  • Platinum-iridium-tip electrode
  • Radiofrequency ablation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

Cite this

Ablation time efficiency and lesion volume - In vitro comparison of 4 mm, non irrigated, gold- and platinum-iridium-tip radiofrequency ablation catheters. / Balázs, Tibor; Laczkó, Romola; Bognár, Eszter; Akman, Serkan; Nagy, Péter; Zima, E.; Dobránszky, János; Szili-Török, Tamás.

In: Journal of Interventional Cardiac Electrophysiology, Vol. 36, No. 1, 01.2013, p. 13-18.

Research output: Contribution to journalArticle

Balázs, Tibor ; Laczkó, Romola ; Bognár, Eszter ; Akman, Serkan ; Nagy, Péter ; Zima, E. ; Dobránszky, János ; Szili-Török, Tamás. / Ablation time efficiency and lesion volume - In vitro comparison of 4 mm, non irrigated, gold- and platinum-iridium-tip radiofrequency ablation catheters. In: Journal of Interventional Cardiac Electrophysiology. 2013 ; Vol. 36, No. 1. pp. 13-18.
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abstract = "Purpose: We investigated the development of in vitro lesion formation in relation to ablation time and power delivery using 4-mm, non-irrigated, platinum-iridium (Pt/Ir), and gold-tip catheters. Methods: Radiofrequency catheter ablation was performed on porcine liver preparations in a 5-60-s 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 ablations. Results: The delivered energy was higher and the lesion volume was significantly larger when using a gold-tip catheter. The lesion volume that was created with the Pt/Ir-tip electrode within 60 s was created after a shorter 40 s ablation period with the gold-tip electrode (Au, 40 s, 345 ± 75 mm3 vs. Pt/Ir, 60 s, 328 ± 30 mm3). Conclusion: The gold-tip catheters had a lower tip temperature resulting in higher energy delivery due to the better thermo-conductivity 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. Gold-tip catheters can create the same adequate lesion within 33.3 {\%} less ablation time due to the higher values of delivered energy as compared to those observed with the use of Pt/Ir catheters.",
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AU - Balázs, Tibor

AU - Laczkó, Romola

AU - Bognár, Eszter

AU - Akman, Serkan

AU - Nagy, Péter

AU - Zima, E.

AU - Dobránszky, János

AU - Szili-Török, Tamás

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N2 - Purpose: We investigated the development of in vitro lesion formation in relation to ablation time and power delivery using 4-mm, non-irrigated, platinum-iridium (Pt/Ir), and gold-tip catheters. Methods: Radiofrequency catheter ablation was performed on porcine liver preparations in a 5-60-s 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 ablations. Results: The delivered energy was higher and the lesion volume was significantly larger when using a gold-tip catheter. The lesion volume that was created with the Pt/Ir-tip electrode within 60 s was created after a shorter 40 s ablation period with the gold-tip electrode (Au, 40 s, 345 ± 75 mm3 vs. Pt/Ir, 60 s, 328 ± 30 mm3). Conclusion: The gold-tip catheters had a lower tip temperature resulting in higher energy delivery due to the better thermo-conductivity 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. Gold-tip catheters can create the same adequate lesion within 33.3 % less ablation time due to the higher values of delivered energy as compared to those observed with the use of Pt/Ir catheters.

AB - Purpose: We investigated the development of in vitro lesion formation in relation to ablation time and power delivery using 4-mm, non-irrigated, platinum-iridium (Pt/Ir), and gold-tip catheters. Methods: Radiofrequency catheter ablation was performed on porcine liver preparations in a 5-60-s 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 ablations. Results: The delivered energy was higher and the lesion volume was significantly larger when using a gold-tip catheter. The lesion volume that was created with the Pt/Ir-tip electrode within 60 s was created after a shorter 40 s ablation period with the gold-tip electrode (Au, 40 s, 345 ± 75 mm3 vs. Pt/Ir, 60 s, 328 ± 30 mm3). Conclusion: The gold-tip catheters had a lower tip temperature resulting in higher energy delivery due to the better thermo-conductivity 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. Gold-tip catheters can create the same adequate lesion within 33.3 % less ablation time due to the higher values of delivered energy as compared to those observed with the use of Pt/Ir catheters.

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