Keywords: VSD image.jpg en Figure A shows the structure and blood flow in the interior of a normal heart Figure B shows two common locations for a ventricular septal defect The defect allows oxygen-rich blood from the left ventricle to mix with oxygen-poor blood in the right ventricle http //www nhlbi nih gov/health/dci/Diseases/chd/chd_types html National Heart Lung and Blood Institute PD-USGov Medicine |