经手术证实的双动脉瓣下室间隔缺损４６例。结合临床、Ｘ线胸片共分为３组：①无并发症的单纯缺损组２８例；②合并肺动脉高压组１２例（其中１例伴动脉导管未闭及主动脉右瓦氏窦瘤）；③合并主动脉右瓣脱垂５例（其中伴主动脉瓣关闭不全４例）及主动脉右瓦氏窦瘤１例。与其它类型的室间隔缺损相比较，讨论了胸部平片诊断的价值、并发症的成因及心血管造影的表现，并强调主动脉根部造影的重要性。 Surgical confirmation of 46 cases of inferior ventricular septal defect. Combined with clinical, X-ray chest is divided into three groups: ① simple defect-free group of 28 patients; ② pulmonary hypertension group with 12 cases (including 1 case of patent ductus arteriosus and aortic right Wuse’s sinus tumor); ③ merger aortic valve prolapse in 5 cases (including aortic valve insufficiency in 4 cases) and aortic right Wuse’s sinus tumor in 1 case. Compared with other types of ventricular septal defect, the diagnostic value of chest radiographs, the causes of complications and the performance of cardiovascular angiography were discussed, and the importance of aortic root imaging was emphasized.