Long RP Tachycardia in a Toddler with Dilated Cardiomyopathy: What is the Mechanism?

The article presents a case of a toddler with incessant supraventricular tachycardia and severe hearth failure confirmed by transthoracic echocardiography. Adenosine administration briefly terminated the arrhythmia for a couple of beats and the tracings recorded during this test allowed to make a precise clinical diagnosis of the type of arrhythmia. Medical therapy failed to controlled the arrhythmia, and the child underwent a percutaneous catheter ablation which successfully terminated with the tachycardia. Taking as a model this unusual pediatric case, the article discusses the most frequent supraventricular arrhythmias in children and gives clues for a precise non-invasive diagnosis.


Gonzalez Corcia M Cecilia, Akila Bersali and Christophe Scavee

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