Severe subpulmonic outflow obstruction caused by aneurysm of the membranous ventricular septum: Diagnosis by transesophageal echocardiography

Hemodynamic Consequences of a Swinging, Infarcted Ventricular Septum

“…[9][10][11][12] Because the current case had no demonstrable systolic narrowing of the RV outflow tract on echocardiography or angiography, but instead had rapid emptying of the inflow portion of the ventricle caused by the septal excursion powered by LV systole, the dynamic pressure gradient, comparable to the Doppler-derived gradient, was thought to have been caused by cavity obliteration. 13 Although oximetry suggested that there were 2 separate increments in oxygen saturation, with a higher value in the PA than in the RV, there was no echocardiographic, angiographic, or intraoperative evidence of a patent ductus arteriosus.…”

Aneurysm of the membranous septum detected during left ventriculography and demonstrated by cardiac magnetic resonance imaging

“…It is considered as a type among the left ventricular outflow tract aneurysms [3]. Although most cases are silent, AMS may be associated with systemic emboli, endocarditis, cardiac arrhythmias, left or right ventricular outflow tract obstruction and right-to-left shunts secondary to ruptures [4][5][6][7]. The thin membrane of the aneurysm typically arises from the margin of the VSD and usually incorporates with the septal leaflet of the tricuspid valve [8].…”

An interventricular membranous septal aneurysm obstructing the right ventricle outflow tract in a five-year-old boy: a case report

“…An aneurysm of the membranous portion of the ventricular septum is a rare congenital anomaly, occurring alone or in combination with other cardiac lesions, and is usually of no clinical significance [ 1 ]. Ventricular septal defect (VSD) is the most common congenital heart malformation (30–40%), as an isolated finding [ 2 ].…”