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.