RFCA VAs arising from DGCV-AIV
A total of 2768 VAs received RFCA in our cardiac lab, and 4.44% VAs
(123/2768) were found arising from the region of DGCV-AIV. Successful
ablation was achived in 102 patients (102/123). As is well-known,
DGCV-AIV is the epicardial part of LVOT, the myocardium near the
DGCV-AIV can be a source of idiopathic VAs. Yamada T et al. studied 27
consecutive patients with VAs originating from the epicardial LVOT and
achieved successful ablation within the DGCV in 14
patients[5]. Hachiya H et al. also reported
successful catheter ablation of idiopathic VAs originating from the
AIV[6]. More recently, Yuki K et al. reported that
14 patients were found to have summit-CV VAs and successful ablation
were achieved in 10 (71%) patients[7]. Therefore,
VAs arising from DGCV-AIV was not a rare phenomenon and cathether
ablation is an effective treatment for DGCV-AIV VAs.