Bicuspid aortic valve and ascending aneurysms go together. The specimens from patients who had a replacement reveal that there is an abnormality in the wall of the aorta (medial necrosis). The turbulence from the valve is what may cause the aneurysm to worsen, however, even the patients who have bicuspid valves that are not severely stenotic can develop aneurysms, meaning that the aneurysm is probably unrelated to the turbulent flow related to the stenosis. To be certain that you abdominal aorta is normal, you could undergo a screening US. Statistically speaking you should be ok.