Conclusions
In patients with TOF and UAPA, if there is a pulmonary confluence in the affected hilum, it is feasible to implement bilateral pulmonary artery reconstruction for one-stage TOF correction. The use of pulmonary artery extension technique and autologous tissue to reconstruct the connection between the left pulmonary artery and the main pulmonary artery can reduce the incidence of anastomotic stenosis. The long-term effect needs further follow-up.