Limitations
This study included a small number of clinical events and patients for
statistical analysis, and the design was a retrospective analysis at a
single center. We could not distinguish between VTs related to AVR and
idiopathic OTVTs precisely. More detailed analyses and comparisons
between cardiac MRI and high-density endo- and epi-mapping would be
needed to understand the precise circuits of periaortic VTs after AVR.
Large-scale, prospective studies are needed to validate our findings.