Limitations
The study had several limitations that need to be considered while
interpreting the results. First, this was a single institution study of
a small group of patients over a short period of time. The number of
cases who are diagnosed heterotaxy with extracardiac TAPVC in our
hospital is decreasing; we performed the last case of this procedure in
April 2020. Further studies are required to investigate the long-term
outcomes in a larger number of patients. Second, we only evaluated the
effect of the V-A angle and the anatomical relationship between the arch
and apex on surgical outcomes. Thus, we cannot exclude the possibility
of an incidental focal change in the PVs along the suture line as a
cause of postoperative branch PVO.