h now.???Ventricular septal defect is one of the most common heart defects present at birth, and is commonly associated with Down syndrome.??? source: <a href="http://www.cbc.ca/news/health/Featuredcardiovascularcbc">http://www.cbc.ca/news/health/Featuredcardiovascularcbc</a> health newsheart healthyMontrealventricular septal defectMyaSharonaSharon is an artist who freelances in illustration, graphics, photography, and website content.