Atrioventricular nodal reentrant tachycardia ablation and inferior vena cava agenesis [Ablação de taquicardia por reentrada nodal auriculoventricular e agenesia da veia cava inferior]

Abstract : Congenital anomalies of the inferior vena cava (IVC) are rare and very often diagnosed in asymptomatic patients during computed tomography performed for other purposes. These anomalies can have significant clinical implications, for example if electrophysiology procedures are needed. Diagnostic and ablation procedures are difficult since catheter manipulation and positioning are more complex. We present here a case of successful atrioventricular nodal reentrant tachycardia ablation in a patient with unexpected IVC agenesis, using an azygos route. © 2016 Sociedade Portuguesa de Cardiologia