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Ablação por radiofrequencia da fibrilação atrial paroxística: fatores determinantes da eficácia clínica a longo-prazo / Radiofrequency catheter ablation of paroxysmal arial fibrilation: decisive factors of the clinical efficacy in long-term
São Paulo; s.n; 2007. 79 p. ilus, tab, graf.
Thesis in Portuguese | LILACS | ID: lil-460206
RESUMO
O objetivo deste estudo foi avaliar retrospectivamente, em longo-prazo, os preditores de recorrência de fibrilação atrial paroxística (FA) em 139 pacientes submetidos à ablação por radiofreqüência, através das técnicas ostial ou extra-ostial de abordagem do átrio esquerdo, associadas ou não à ablação do istmo cavo-tricuspídeo (ICT). Variáveis pré, intra e pós-ablação foram avaliadas por análise uni e multivariada, para determinar os preditores de recorrência da FA após um procedimento. Observou-se que maior tempo de história de FA, uso de mais antiarrítmicos e recorrência de FA dentro de 60 dias pós-procedimento, aumentaram o risco de recorrência de FA a longo-prazo. Por outro lado, a associação de flutter atrial e a ablação concomitante do ICT, reduziram o risco de recorrência ao final de 32 ±12 meses.
ABSTRACT
The objective of this study was to evaluate in retrospect, in long-term, the predictors of late recurrence of atrial fibrillation (AF) in 139 patients submitted to the ablation by radiofrequency, through the techniques ostial or extra-ostial of approach of the atrium left, associated or not to the ablation of the cavotricuspid isthmus(ICT). Variables pré, intra and post-ablation were appraised for analysis uni and multivariated, to determine the predictors of recurrence of AF after one procedure. It was observed that larger time of history of AF, use of more drugs and recurrence of AF within 60 days after procedure, they increased the risk of recurrence of AF to long-term. On the other hand, the association of atrial flutter and the concomitant ablation of ICT, they reduced the recurrence risk at the end of 32 ±12 months.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Recurrence / Atrial Fibrillation / Catheter Ablation Type of study: Observational study / Prognostic study / Risk factors Limits: Humans Language: Portuguese Year: 2007 Type: Thesis

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Full text: Available Index: LILACS (Americas) Main subject: Recurrence / Atrial Fibrillation / Catheter Ablation Type of study: Observational study / Prognostic study / Risk factors Limits: Humans Language: Portuguese Year: 2007 Type: Thesis