A VSD, or Ventricular Septal Defect, is a "hole" or "holes" between the bottom two chambers of the heart. The "hole" or "holes" may be single or multiple. It can be located anywhere along the ventricular septum, the wall dividing the ventricles of the heart, appearing high, in the middle, or low on the septal wall. For more information click here. jmarkmoralesmd.com/cardiothoracic-procedures/ventricular-septal-defect.html Like us on Facebook www.facebook.com/ccheartplace or visit our website www.ccheartplace.com