ObjectiveIn order to correct left pulmonary artery (LPA) stenosis in tetralogy of Fallot (TOF), a technique for LPA reconstruction by widening pulmonary arterial posterior wall was devised. To evaluate its surgical technique as well as postoperative outcome. MethodsFrom January 2008 through August 2014 year, 1 142 consecutive patients underwent repair of TOF including 44 patients with TOF and LPA stenosis in our hospital. We used widening pulmonary arterial posterior wall for LPA reconstruction in 21 patients. The median age was 22.8 months (range, 1 month to 11 years), and the median weight was 9.1 kg (range, 3.8-29 kg). ResultsThere was one operative death. No death occurred during the follow-up period in the other 20 patients. There were 4 patients with complicate unbalanced pulmonary perfusion postoperatively. Echocardiography at 3-72 months follow-up demonstrated no obvious stenosis was found at LPA in 14 patients, and mild stenosis (32.8±12.7 mm Hg) in 6 patients. Only 1 patient required further interventions because of restenosis of LPA. ConclusionsLPA reconstruction by widening pulmonary arterial posterior wall is an effective method in the management of stenosis of LPA in the patients with TOF. We emphasize division of the arterial duct or ligamentum completely because it will tether and kink the LPA. This procedure retains the better growth potential by increasing autogenous tissue of native tissue.