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In this study, we describe a very rare case of anomalous left coronary artery arising from the right pulmonary artery in association with coarctation of the aorta. A 3-month-old boy presented with refractory congestive heart failure since 20 days after birth. The initial echocardiography suggested the diagnosis of left coronary artery-to-right pulmonary artery fistula associated with coarctation; however, selective coronary angiography demonstrated the rare anomaly of the left coronary artery arising from the right pulmonary artery. Subsequently, he underwent successful transcatheter balloon angioplasty for aortic coarctation and surgical repair of left coronary artery re-implantation.
Most idiopathic right ventricular tachycardias originate from the outflow tract. We present a case series of idiopathic incessant ventricular tachycardia arising from unusual sites of the right ventricle in children, which were well resolved by catheter ablation.
A retrospective review was performed of all three patients who underwent ablation of idiopathic ventricular tachycardia below the level of the right ventricular outflow tract using three-dimensional mapping in our institute.
All three patients presented with tachycardia-induced cardiomyopathy due to incessant ventricular tachycardia on first admission. The sites of successful ablation were at the proximal right bundle branch, distal right bundle branch, and apex of the right ventricle, respectively. No complications occurred, and there has been no recurrence of ventricular tachycardia after the final ablation at an average follow-up period of 9 months. All three patients have achieved normalisation of left ventricular size and systolic function.
Incessant idiopathic ventricular tachycardia originating from unusual sites of the right ventricle in children, resulting in significant symptoms and impaired ventricular function, can be successfully treated with catheter ablation.
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