Conclusions
PBPV is a definitive therapy in the pediatric population with PVS based
on its safety, effectiveness, feasibility, and practicality. Although
PBPV was effective in relieving PVS with low risk of residual stenosis
and re-stenosis, there was considerable risk of moderate and severe PR
in the late follow-up. Although PBPV was efficient in alleviating PVS
with lower risk of residual stenosis and restenosis, there was still a
significant risk of ≥moderate PR in the late follow-up. Furthermore, PR
may be aggravated with time; hence, further studies are essential to
explore mechanism underlying the development of
PR.