Key result
3-dimensional mapping successfully identified an arrhythmic substrate in the right ventricular outflow tract, leading to successful ablation and a revised diagnosis of scar-related VT.
Case Report (n=1)
3D mapping can identify previously missed arrhythmic substrates in patients diagnosed with idiopathic ventricular fibrillation, potentially altering the diagnosis and enabling targeted ablation.
May warrant scar mapping in presumed IVF with recurrent RVOT VT; leaves open reclassification prevalence.
A 45-year-old man who was diagnosed with idiopathic ventricular fibrillation (IVF) 12 years ago experienced multiple implantable cardioverter defibrillator shocks due to ventricular tachycardia (VT). The recorded electrocardiogram showed VT originating from the right ventricular outflow tract (RVOT). He underwent catheter ablation for VT, and 3-dimensional (3D) mapping revealed a low voltage area in the RVOT. VT was successfully ablated at this site, and his final diagnosis was scar-related VT, not IVF. We suggest that 3D mapping is useful for the reassessment of IVF because an arrhythmic substrate might have been missed in patients who were initially diagnosed with IVF.
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Harano et al. (2020) conducted a case report in Idiopathic ventricular fibrillation / Ventricular tachycardia (n=1). 3-dimensional (3D) mapping and catheter ablation was evaluated on Successful ablation of VT and reassessment of diagnosis. 3-dimensional mapping successfully identified an arrhythmic substrate in the right ventricular outflow tract, leading to successful ablation and a revised diagnosis of scar-related VT.
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