The aortic valve separates the aorta and the left ventricle. A normal valve has three cusps while bicuspid valve has two. Heidi M. Connolly, MD., explains this common heart defect that affects more males than females and details how this defect is diagnosed. Associated disorders of a bicuspid valve includes, abnormal valve function, abnormal aorta, infections, genetics and family history with many having Turner syndrome, as well as other congenital heart defects. Lastly, Dr. Connolly explains how these patients should be cared for and treated.