Aneurysms Support Group
An aneurysm (or aneurism) is localized, blood-filled dilation (bulge) of a blood vessel caused by disease or weakening of the vessel wall. Aneurysms most commonly occur in arteries at the base of the brain and in the aorta - this is an aortic aneurysm. This bulge in a blood vessel can burst and lead to death at any time.
I would get a second opinion. Heart artery repair is dangerous in of itself but this sounds like a situation that needs attention. As radical as an open surgery may be , part of your case has to do with a replacement with artery material that was child sized. Good enough for under a hundred pound weight blood volume and pressure, but not for a full adult and the additional strain that brings. The pressure at the point of fusion is like passing water from a 3/4 inch tube through a 1/4 inch tube. The aneurysm will happen when the pressure must condense to the smaller passage. The pseudo- is because it was a man made reduction, not a congenital or injury induced reduction that is becoming a pooling area stretching the fusion point. So the artery that is natural in size to that part of your body is giving under the pressure. A stent could open the inserted section but there would need to be enough flexibility in the piece that was replaced. A bypass would probably be taken from your leg where there is artery material that wouldn't be rejected and with the strength and flexibility to hold.
Prayers that this has been resolved.