The presentation can vary based on the underlying issue with the graft. Most symptoms are non-specific and include nausea, vomiting, abdominal pain, hematochezia, and back pain.
Aortic endograft complications
Aortoenteric Fistula 
Heart transplant complications
Endoleaks- Vascular flow outside of the graft that is still contained in the aortic aneurysm. This can lead to worsening AAA and ultimately rupture.
Aortoenteric fisulta
Type 1: the seal of the graft fails
Left ventricular assist device complications
Type 2: a collateral vessel leaks