Here's a paragraph from one paper in the Journal Of Cardiothoracic Surgery (Mar. 06) that addresses the BAV/aneurysm conundrum:
Another surgical approach suggested for the management of BAV, associated with a dilated ascending aorta less than 5.5cm is to carry out AVR with wrapping of the ascending aorta. This method has a low morbidity and mortality rate and was seen to decrease the risk of further dilatation, aneurysm formation and dissection [54,55]. More recently this procedure has been carried out using an external support made to fit the patient's aorta. This was done using digital information from magnetic resonance images to make a replica of the patient's aorta and then computer-aided design to produce the tailored graft .
Sounds interesting...a custom made aortic "wrap." I wonder if this will be an option for me?