Bunga Bella Pratiwi, Ardian Rizal, Valerinna Yogibuana
Arrhythmias in adults with congenital heart disease (ACHD) can occur due to remodelling and post-intervention injury. As ablation is the gold standard for arrhythmia intervention, finding the electrical source from ACHD can be challenging, especially after surgical repair. We present an ACHD with patent ductus arteriosus (PDA) without risk factor cardiovascular disease, with post-closure complaints of frequent palpitations and a history of supraventricular tachycardia (SVT) after transcatheter PDA closure; electrocardiography (ECG) shows SVT. Mean pulmonary arterial pressure (MPAP) was 81 mmHg before PDA closure and 64 mmHg after closure. The patient was planned for 2D ablation, and concentric coronary sinus activation was found. VAV activation showed PPI-TCL?>115 ms, ventriculoatrial interval <70 ms, SVT AVNRT/AVRT with excluded AT (V-A stimulus 202 ms). ECG and electrogram after radiofrequency ablation show successful ablation with paroxysmal atrial tachycardia. Detailed examination of ECG and echocardiography with manoeuvres is important to distinguish concomitant arrhythmia or correlation in ACHD. © EFIM 2025
Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
