Bicuspid aortic valve (BAV) is the most common congenital heart disease lesion with an estimated 280 000 to 560 000 people affected in the Canada. Dilatation of the ascending aorta is a common feature in patients with BAV and is a result of inherent vascular abnormalities with superimposed effects of age and acquired cardiovascular risk factors. Severe aortic dilatation (> 50mm) leads to aortic dissection and premature death.