These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Cavotricuspid isthmus ablation with large-tip gold alloy versus platinum-iridium-tip electrode catheters.
    Author: Kardos A, Foldesi C, Mihalcz A, Szili-Torok T.
    Journal: Pacing Clin Electrophysiol; 2009 Mar; 32 Suppl 1():S138-40. PubMed ID: 19250078.
    Abstract:
    BACKGROUND: Gold has excellent electrical conductive properties and creates deeper and wider lesions than platinum-iridium during radiofrequency (RF) ablation in vitro. We tested the maximum voltage-guided technique (MVGT) of cavotricuspid isthmus (CTI) ablation using two 8-mm tip catheters containing gold (group G) or platinum-iridium (group PI). METHODS: We enrolled 31 patients who underwent CTI ablation. In group G (n = 15) CTI ablation was performed with a gold-tip ablation catheter, while in group PI (n = 16) a platinum-iridium tip was used. Ablation was guided by CTI potentials with the highest amplitude until achievement of bidirectional block (BIB). If BIB was not achieved after 10 RF applications, RF was delivered via a 3.5-mm irrigated-tip catheter. Success rate, procedure duration, duration of fluoroscopic exposure, and number of RF applications were measured. RESULTS: BIB was achieved in all patients in group G, while in group PI an irrigated tip was used in four patients (0% vs 25%, P < 0.001). These four patients required a total of 21 additional RF applications (5.25 +/- 2.22). Procedure time (56.4 +/- 12 vs 73.1 +/- 15 minutes P < 0.05) and fluoroscopic explosure (4.9 +/- 2.3 vs 7.1 +/- 3.8 minutes, P < 0.01) were shorter in group G than in group PI. Mean number of RF applications was lower (4.6 +/- 1.9 vs 6.6 +/- 3.1 P < 0.001) and total RF duration shorter (280 +/- 117 vs 480 +/- 310 seconds) in group G than in group PI. No difference was observed in the number of recurrences at a 6 month-follow up (1 in group G vs 1 in group PI). CONCLUSION: Using the MVGT of CTI ablation, gold-tip catheters were associated with shorter procedural and fluoroscopic times, and fewer RF applications.
    [Abstract] [Full Text] [Related] [New Search]