Benchtop quantification of gutter formation and compression of chimney stent grafts in relation to renal flow in chimney endovascular aneurysm repair and endovascular aneurysm sealing configurations

Chimney endovascular aneurysm repair and chimney endovascular aneurysm sealing are used more commonly for elective repair of juxtarenal abdominal aortic aneurysms. Gutter formation and chimney graft compression may occur because of a mismatch in architecture between the chimney stent grafts and the endograft or endosystem, and this may induce a risk for complications such as type Ia endoleaks and stent thrombosis. This benchtop study evaluated gutter formation and chimney stent graft compression for various chimney endovascular aneurysm repair and chimney endovascular aneurysm sealing configurations in relation to renal flow.