Early and long-term results of ventricular septal defect repair in children with severe pulmonary hypertension and elevated pulmonary vascular resistance by the double or traditional patch technique.

The DP operation is a low-risk procedure. Moreover, the long-term outcome with the use of this technique in high-risk patients with VSD and high PVR and PAH is favourable with respect to survival and showed a decrease in PAH at the last follow-up.