Sweeney L J, Rosenquist G C
Am Heart J. 1979 Aug;98(2):194-9. doi: 10.1016/0002-8703(79)90221-7.
The atrial septum is a blade-shaped structure with a concave anterior margin that reflects the curve of the ascending aorta, a convex posterior margin, and an inferior margin along the mitral annulus. The fossa ovalis comprises an average of 28 per cent of the total septal area, or 43 mm.2 in infants and 240 mm.2 in adults. The channel that persists between the fossa ovalis and the muscular atrial septum is patent except at the limbus, providing a useful explanation for the success of blunt transseptal atrial catheterization and right-to-left shunts in individuals with elevated right atrial pressure.
房间隔是一个叶片状结构，其前缘凹面反映升主动脉的曲线，后缘凸面，下缘沿二尖瓣环。卵圆窝平均占整个间隔面积的28%，婴儿为43平方毫米，成人为240平方毫米。卵圆窝与肌性房间隔之间持续存在的通道除在边缘嵴处外均为开放状态，这为右心房压力升高患者经房间隔钝性导管插入术成功及右向左分流提供了合理的解释。
