Purcaro A, Ciampani N, Piva R, Blandini A
G Ital Cardiol. 1981;11(5):590-9.
It has been documented by others that spontaneous closure or diminution in size of membranous ventricular septal defect is often associated with aneurysmal formation of the membranous septum. In a series of 51 patients, who underwent cardiac catheterization and cineangiocardiography for evaluation of the severity of a ventricular septal defect, 7 patients showed an aneurysm of the membranous interventricular septum (VSA) associated with a small ventricular septal defect (VSD). M-mode echocardiography was useful in the detection of VSA in 6 of them. Echocardiographic findings were not uniform in all cases. In most instances they consisted of linear echoes, that seemed to come off from the base of the interventricular septum and to protrude within the right ventricle in systole; the echoes from the VSA showed a coarse fluttering. Even if errors can be minimized by a correct technique, anomalous echoes from the VSA might however be confused with those of other anatomical structures (aortic root, tricuspid valve, etc.). M-mode echocardiography seems to be useful for the followup of patients with membranous VSD. The detection of VSA by ultrasonic means should suggest a good prognosis for VSD, possibly avoiding the need for repeat invasive studies.
其他人已证明，膜周部室间隔缺损的自发闭合或尺寸减小常与膜周部间隔瘤形成相关。在一组51例因评估室间隔缺损严重程度而接受心导管检查和心血管造影的患者中，7例显示膜周部室间隔瘤（VSA）合并小室间隔缺损（VSD）。M型超声心动图对其中6例VSA的检测有帮助。超声心动图表现并非在所有病例中都一致。在大多数情况下，它们由线性回声组成，这些回声似乎从室间隔基部发出，在收缩期突入右心室内；VSA的回声呈粗糙的扑动。即使通过正确的技术可将误差降至最低，但VSA的异常回声仍可能与其他解剖结构（主动脉根部、三尖瓣等）的回声相混淆。M型超声心动图似乎对膜周部VSD患者的随访有用。通过超声手段检测到VSA提示VSD预后良好，可能无需重复进行侵入性检查。
