Radiofrequency Catheter Ablation in Familial Paroxysmal Supraventricular Tachycardia Due to Accessory Atrioventricular Pathways

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Radiofrequency catheter ablation(RF-CA)has been widely used to cure paroxysmal supraventricular tachycardia(PSVT). However, its use has never been reported in familial PSVT caused by an accessory atrioventricular pathway(AP), which is known as one of the typical familial cardiovascular diseases. Two cases of using RF-CA for familial PSVT due to APs are presented, in a brother and sister, supporting a potential genetic role in the developmental failure to lose the atrioventricular connection during fetal life. The sister, a 24-year-old woman, had intermittent episodes of palpitation accompanied by chest pain for 2 years. An electrophysiologic study(EPS)confirmed her clinical tachycardia was atrioventricular reentrant tachycardia(AVRT)due to a left lateral concealed AP, which was subsequently successfully ablated with RF-CA. The brother, a 22-year-old man, had a 5-year history of paroxysmal palpitation. A resting electrocardiogram showed a right bundle branch block and left axis deviation with a delta wave. During his EPS, AVRT was reproducibly induced and a manifest AP was localized and then ablated at the left posteroseptal site, resulting in disappearance of the delta wave. PSVT, however, recurred 1 month later and during a repeal EPS the tachycardia was proved to be AVRT due to a right anterior concealed AP. The right anterior AP was successfully ablated with RF-CA. Both patients remained asymptomatic for more than 3 years following the successful ablation procedures.
社団法人日本循環器学会の論文
1998-11-20

Radiofrequency Catheter Ablation in Familial Paroxysmal Supraventricular Tachycardia Due to Accessory Atrioventricular Pathways

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