XXXX producing symptoms in infancy: the role of radiofrequency catheter ablation.

@entity1 @entity712 @entity3155 @entity5 @entity120 @entity591 @entity4618 @entity955 @entity299 @entity4710 @entity340 @entity943
BACKGROUND: @entity299 , although benign, may produce symptoms related to @entity943 or mechanical obstruction. Surgical excision is the therapy of choice for symptomatic @entity4618 in infancy. @entity1 AND METHODS: Two @entity1 with @entity4618 producing symptoms underwent radiofrequency catheter ablation of the @entity5 . In @entity1 1 the diagnosis of multiple @entity4618 associated with recurrent @entity4710 was made in utero. After birth, several antiarrhythmic agents were administered, without successful suppression of the @entity591 . At seven months of age, the @entity1 had one large @entity5 on the left atrial aspect of the anterior mitral valve leaflet with associated @entity3155 and re-entrant supraventricular @entity591 suggestive of a left-sided pathway. Catheter ablation of the accessory pathway was performed via a retrograde femoral arterial approach, targeting the earliest site of ventricular activation. @entity1 2 presented as a neonate with multiple @entity4618 , one of which, measuring 15 mm * 15 mm, was producing severe mitral @entity340 resulting in symptoms of @entity712 due to a large left-to-right shunt at atrial level and persistent @entity120 . Via the femoral vein, a 5F ablation catheter was advanced across the @entity955 , and the @entity5 directly ablated. RESULTS: Echocardiography performed 24 hours later demonstrated alteration in @entity5 morphology, with the development of a large central echolucent area, followed by progressive @entity5 shrinkage in both @entity1 . @entity1 1 was discharged at 24 hours, and @entity1 2 at seven days post-ablation, without symptoms. Follow-up at four weeks confirmed further @entity5 shrinkage. CONCLUSION: Transcatheter @entity5 ablation may be beneficial in selected @entity1 and @entity1 .
