ABSTRACT
Na taquicardia por reentrada nodal atrioventricular, a necessidade do átrio para a manutenção da taquicardia é controverso. Descrevemos um caso de fibrilação atrial ocorrendo durante taquicardia por reentrada nodal atrioventricular sem afetar o ciclo da arritmia, e discutimos as evidências favorecendo a presença de umavia comum superior.
In Atrioventricular Nodal Reentry Tachycardia the requirement of the atrium for the maintenance oftachycardia is controversial. We describe a case of atrial fibrillation that occurred during Atrioventricular Nodal Reentry Tachycardia without affecting the arrhythmia cycle, and discuss the evidences favoring the presence ofan upper common pathway.
Subject(s)
Humans , Male , Adult , Atrial Fibrillation/complications , Atrial Fibrillation/diagnosis , Tachycardia, Supraventricular/complications , Tachycardia, Supraventricular/diagnosis , Tachycardia, Atrioventricular Nodal Reentry/complications , Tachycardia, Atrioventricular Nodal Reentry/diagnosis , Catheters , Heart Atria , Heart VentriclesABSTRACT
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).