[Dilated cardiomyopathy secondary to atrial ectopic tachycardia]. / Miocardiopatía secundaria a taquicardia auricular ectópica.

Ectopic atrial tachycardia is an uncommon cause of supraventricular tachycardia in children. It can resolve spontaneously or induce dilated cardiomyopathy. It is important to recognize this entity as a reversible cause of dilated cardiomyopathy, characterized by the presence of an abnormal focus located in the atrial myocardium and distinct to sinus node. Treatment strategies include the use of antiarrhythmic drugs, radiofrequency ablation, and, in patients refractory to medical treatment, surgical resection of the ectopic focus. We describe a patient with dilated cardiomyopathy due to an atrial ectopic focus and its resolution after medical treatment.

Miocardiopatía secundaria a taquicardia auricular ectópica / Dilated cardiomyopathy secondary to atrial ectopic tachycardia

La taquicardia auricular ectópica es una causa infrecuente de taquicardia supraventricular en niños pudiendo resolverse espontáneamente o derivar a una miocardiopatía dilatada. La importancia de esta entidad se basa en ser una causa de miocardiopatía dilatada reversible. Se caracteriza por la presencia de un foco anómalo localizado en el tejido auricular distinto al nodo sinusal. Su tratamiento incluye: fármacos antiarrítmicos o ablación por radiofrecuencia y en casos rebeldes resección quirúrgica del foco ectópico. Presentamos una paciente con una miocardiopatía dilatada secundaria a un foco auricular ectópico y su recuperación con tratamiento médico

Ectopic atrial tachycardia is an uncommon cause of supraventricular tachycardia in children. It can resolve spontaneously or induce dilated cardiomyopathy. It is important to recognize this entity as a reversible cause of dilated cardiomyopathy, characterized by the presence of an abnormal focus located in the atrial myocardium and distinct to sinus node. Treatment strategies include the use of antiarrhythmic drugs, radiofrequency ablation, and, in patients refractory to medical treatment, surgical resection of the ectopic focus. We describe a patient with dilated cardiomyopathy due to an atrial ectopic focus and its resolution after medical treatment