Limitations
There were several limitations to our study. Firstly, there were no
cases that underwent a 2nd session of ablation. The reconnections of the
SVC have not been evaluated, and therefore, the medium- to long-term
durability was unclear. Secondly, this study was a single-center
retrospective study based on the FTI guided ablation with a relatively
small sample of subjects. So further randomized controlled studies based
on the AI guided ablation would be needed for its validation in a larger
cohort. Finally, the SVCI could be the result of SVC stenosis. However,
we did not perform computed tomography after the ablation. Hence the
incidence of SVC stenosis was unknown.