RESUMO
[Figure: see text].
Assuntos
Arritmias Cardíacas/epidemiologia , COVID-19/epidemiologia , Saúde Global/tendências , Idoso , Arritmias Cardíacas/mortalidade , Arritmias Cardíacas/fisiopatologia , Arritmias Cardíacas/terapia , COVID-19/mortalidade , COVID-19/terapia , Eletrofisiologia Cardíaca/tendências , Comorbidade , Técnicas Eletrofisiológicas Cardíacas/tendências , Feminino , Pesquisas sobre Atenção à Saúde , Disparidades em Assistência à Saúde , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Padrões de Prática Médica/tendências , Prevalência , Prognóstico , Estudos Retrospectivos , Medição de Risco , Fatores de TempoRESUMO
Atrioventricular nodal reentrant tachycardia is the most frequent regular supraventricular tachycardia. It is generally a benign arrhythmia and usually it is no associated with heart disease. It is more often seen in middle-aged women but it is no infrequent in younger and older patients. The development of radiofrequency with catheter ablation has provided the possibility to definitely cure the arrhythmia and moreover permit a better comprehension of the underlying electrophysiologic and anatomic substrate.
Assuntos
Ablação por Cateter/métodos , Taquicardia por Reentrada no Nó Atrioventricular/cirurgia , Eletrocardiografia , Técnicas Eletrofisiológicas Cardíacas , HumanosRESUMO
Several studies have shown the role of focal trigers in the pulmonary veins initiating episodes of atrial fibrillation. Radiofrequency catheter ablation of this foci is a curative therapy for paroxysmal atrial fibrillation. We report a case of idiopathic paroxysmal atrial fibrillation triggered by abnormal electrical activity in a single pulmonary vein. Mapping was performed during sinus rhythm with a 4F decapolar catheter (Spiral Supreme, Daig, St. Jude Medical) positioned near the ostium by a transseptal approach. Pulmonary vein potentials were only identified in the left superior pulmonary vein. Segmental ostial ablation (30 W) performed during left atrial pacing resulted in complete cesation of conduction in the pulmonary vein. There were no complications. The clinical response (suppression of the paroxysms of atrial fibrillation in a 9-month follow-up) observed in this patient imply that atrial fibrillation was triggered by this pulmonary vein. This case report illustrates several aspects of catheter-based ablation of pulmonary vein foci for the treatment of paroxysmal atrial fibrillation and demonstrates its efficacy.
Assuntos
Fibrilação Atrial/terapia , Ablação por Cateter/métodos , Adulto , Cateterismo Cardíaco , Estimulação Elétrica/métodos , Eletrocardiografia , Técnicas Eletrofisiológicas Cardíacas/métodos , Humanos , Masculino , Veias Pulmonares/cirurgia , Resultado do TratamentoRESUMO
La taquicardia por reentrada nodal atrioventricular, es una de las causas más frecuentes de taquicardia supraventricular. Es generalmente una arritmia benigna y usualmente no está asociado a cardiopatía estructural, se presenta más frecuentemente en mujeres de media edad, pero no es infrecuente encontrarlo en personas jóvenes y en ancianos. El desarrollo de la ablación con radiofrecuencia a través de un catéter facilita la cura definitiva de la arritmia y permite una mejor compresión del sustrato anatómico electrofisiológico.
Atrioventricular nodal reentrant tachycardia is the most frequent regular supraventricular tachycardia. It is generally a benign arrhythmia and usually it is no associated with heart disease. It is more often seen in middle-aged women but it is no infrequent in younger and older patients. The development of radiofrequency with catheter ablation has provided the possibility to definitely cure the arrhythmia and moreover permit a better comprehension of the underlying electrophysiologic and anatomic substrate. (Arch Cardiol Mex 2003; 73:143-154).
Assuntos
Humanos , Ablação por Cateter/métodos , Taquicardia por Reentrada no Nó Atrioventricular/cirurgia , Eletrocardiografia , Técnicas Eletrofisiológicas CardíacasRESUMO
Discordant atrioventricular connections associated with Wolff-Parkinson-White syndrome increase the challenge of radiofrequency ablation. We report the results and techniques of radiofrequency ablation in three patients with discordant atrioventricular connections, including one patient having double outlet right ventricle with atrioventricular reentry tachycardias. There were two males and one female, aged 14 and 22 years old. We found four accessory pathways during our electrophysiological studies, with two of them manifest on the electrocardiogram, corresponding to left paraseptal and right midseptal regions. The electrophysiological study confirmed this localization, and showed two concealed accessory pathways in the right and left paraseptal regions. Radiofrequency ablation was successful in all cases without recurrence at a mean follow-up of 18.6 months. No complications were observed during the procedures. We conclude that radiofrequency ablation is feasible and effective in the ablation of accessory pathways in patients with discordant atrioventricular connections.