A ventricular septal defect (VSD) is a hole in the septum, which is the wall separating the two lower chambers of the heart. In many cases, the hole closes on its own. A ventricular septal defect is a ...
The septum of the heart is a wall of tissue that separates the left and right sides of the heart and enables blood to flow as it should. It consists of the atrial septum and the ventricular septum.