Objective\ To investigate the surgical technique and clinical results of interruption of patent ductus arteriosus (PDA) with video assisted thoracic operation (VATO).\ Methods\ Fifty PDA cases were divided into two groups, 25 cases treated with VATO(VATO group) as compared to other 25 cases with conventional surgical interruption(conventional surgical interruption group). In the VATO group, the PDA was interrupted by 2 3 hemoclips under VATO technique, and PDA interrupted by suture ligation with the techni...