If you have an ascending dissection which then extended into your right coronary artery, which is the most likely scenario and not the reverse, then you need to be operated because there is a high risk of death from ascending ( type A ) aortic dissections. You need to see a cardiothoraccic surgeon ASAP who specializes in these procedures. At the same time he also may have to bypass the right coronary vessel, but that is not the most important issue. Type A dissections can rupture unpredictably and when this occurs most people do not have time to make it to surgery. This is the same condition which took famous actor John RItter's life at a young age fairly recently.