IntroductionThere are few reports on arrhythmia treatment in patients with the later-onset phenotype of Fabry disease (FD). Case reportAblation was performed for recurrent atrial fibrillation (AF) in a patient with FD. Even after the re-isolation of the left inferior pulmonary vein (LIPV), AF was easily induced. After fractionated signal area ablation,

not-yet-known not-yet-known not-yet-known unknown The decremental properties of the nodoventricular pathway (NVP) are uncertain. During short RP supraventricular tachycardia, a His-refractory premature ventricular contraction (PVC) consistently terminated the tachycardia without atrial capture immediately after the PVC. Whereas a slightly earlier PVC failed to reset the subsequent His but terminated the tachycardia without atrial capture one cycle later. These observations are diagnostic of slow-fast atrioventricular nodal reentrant tachycardia (AVNRT) with a bystander concealed-NVP and can be explained by decremental properties in the NVP itself; greater prematurity of the PVC resulted in more decremental conduction over the NVP, causing the AVNRT termination one cycle later.