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[Radiofrequency catheter ablation of left accessory pathways by transeptal approach].
Arq Bras Cardiol. 2006 May; 86(5):331-6.AB

Abstract

OBJECTIVE

To study a series of patients submitted to radiofrequency catheter ablation (RFA) of left accessory pathways (AP) using the transeptal approach (TSA) as compared to the conventional retrograde arterial approach (RAA).

METHODS

One hundred consecutive patients (56 male; mean age of 34.3 +/- 11 years) with 100 left APs (62 overt and 38 concealed) underwent catheter ablation using the TS method (50 patients) and the RA method (50 patients) in an alternate fashion. The analysis was performed according to the intention-to-treat principle.

RESULTS

The transeptal puncture was successfully performed in 48 patients (96%). This access allowed primary success in the ablation in all the patients without any complication. When we compared this approach with the RAA there was no difference as regards the primary success (p = 0.2), recurrence rate (p = 1.0), fluoroscopy time (p = 0.63) and total time (p = 0.47). One patient in the RAA group presented a vascular complication. The TSA allowed shorter ablation times (p=0.01) and smaller number of radiofrequency applications (p = 0.003) as compared to the conventional RAA. The patients who had recurrence and unsuccessful ablation in the first session in each approach underwent another session with the opposite technique (cross-over), with a final ablation success rate of 100%.

CONCLUSION

The TS and RA approaches showed similar efficacy and safety for the ablation of left accessory pathways. The TSA allowed shorter ablation times and smaller number of radiofrequency applications. When the techniques were used in a complementary fashion, they increased the final efficacy of the ablation.

Authors+Show Affiliations

Hospital Universitário Cajuru, Pontifícia Universidade Católica do Paraná, Curitiba. masilva@cardiol.brNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article
Randomized Controlled Trial

Language

por

PubMed ID

16751936

Citation

Silva, Márcio Augusto, et al. "[Radiofrequency Catheter Ablation of Left Accessory Pathways By Transeptal Approach]." Arquivos Brasileiros De Cardiologia, vol. 86, no. 5, 2006, pp. 331-6.
Silva MA, Nadalin E, Kraemmer A, et al. [Radiofrequency catheter ablation of left accessory pathways by transeptal approach]. Arq Bras Cardiol. 2006;86(5):331-6.
Silva, M. A., Nadalin, E., Kraemmer, A., Berardi, G. R., Jorge, J. C., & da Cunha, C. L. (2006). [Radiofrequency catheter ablation of left accessory pathways by transeptal approach]. Arquivos Brasileiros De Cardiologia, 86(5), 331-6.
Silva MA, et al. [Radiofrequency Catheter Ablation of Left Accessory Pathways By Transeptal Approach]. Arq Bras Cardiol. 2006;86(5):331-6. PubMed PMID: 16751936.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Radiofrequency catheter ablation of left accessory pathways by transeptal approach]. AU - Silva,Márcio Augusto, AU - Nadalin,Elenir, AU - Kraemmer,Alessandro, AU - Berardi,Gel Roberto Marmitt, AU - Jorge,José Carlos Moura, AU - da Cunha,Cláudio L Pereira, Y1 - 2006/05/29/ PY - 2006/6/6/pubmed PY - 2007/3/3/medline PY - 2006/6/6/entrez SP - 331 EP - 6 JF - Arquivos brasileiros de cardiologia JO - Arq. Bras. Cardiol. VL - 86 IS - 5 N2 - OBJECTIVE: To study a series of patients submitted to radiofrequency catheter ablation (RFA) of left accessory pathways (AP) using the transeptal approach (TSA) as compared to the conventional retrograde arterial approach (RAA). METHODS: One hundred consecutive patients (56 male; mean age of 34.3 +/- 11 years) with 100 left APs (62 overt and 38 concealed) underwent catheter ablation using the TS method (50 patients) and the RA method (50 patients) in an alternate fashion. The analysis was performed according to the intention-to-treat principle. RESULTS: The transeptal puncture was successfully performed in 48 patients (96%). This access allowed primary success in the ablation in all the patients without any complication. When we compared this approach with the RAA there was no difference as regards the primary success (p = 0.2), recurrence rate (p = 1.0), fluoroscopy time (p = 0.63) and total time (p = 0.47). One patient in the RAA group presented a vascular complication. The TSA allowed shorter ablation times (p=0.01) and smaller number of radiofrequency applications (p = 0.003) as compared to the conventional RAA. The patients who had recurrence and unsuccessful ablation in the first session in each approach underwent another session with the opposite technique (cross-over), with a final ablation success rate of 100%. CONCLUSION: The TS and RA approaches showed similar efficacy and safety for the ablation of left accessory pathways. The TSA allowed shorter ablation times and smaller number of radiofrequency applications. When the techniques were used in a complementary fashion, they increased the final efficacy of the ablation. SN - 0066-782X UR - https://www.unboundmedicine.com/medline/citation/16751936/[Radiofrequency_catheter_ablation_of_left_accessory_pathways_by_transeptal_approach]_ L2 - http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2006000500002&lng=en&nrm=iso&tlng=en DB - PRIME DP - Unbound Medicine ER -