[Valve-preserving reconstructive surgical procedures on pulmonary artery root in Fallot's tetralogy].

Original surgical method of dilated valvuloplasty is described. In moderate isolated hypoplasia of the fibrous ring of the pulmonary artery this method permits one to perform organ-preserving reconstruction of this zone without transannular plastic operation. Schemes of the surgery, experimental data and clinical experience based on surgical treatment of 31 patients with Fallot's tetrad in combination with hypoplasia of the fibrous ring of the pulmonary artery are presented. Short- and long-term results of the defect correction are reported.