The effect of endoleak on intra-aneurysmal pressure after EVE for abdominal aortic aneurysm / 介入放射学杂志

ABSTRACT

Objective To investigate the intra-aneurysmal pressure curve in the presence of endoleak after endovascular exclusion (EVE) for abdominal aortic aneurysm(AAA). Methods Infrarenal aortic aneurysms were created with bovine jugular vein segements or patches. Then they were underwent incomplete endovascular exclusion of the aneurysm and formation of endoleaks. The pressures of blood flow outside the graft into the sac were measured. Results The intrasac pressure was higher than systemic pressure in the presence of endoleak. After sealing the endoleak, pressure decreased siginificantly, and the pressure curve showed approximately linear. Conclusion The change of intra-aneurysmal pressure curve reflected the load on aneurysmal wall after EVE, and can also help to determine the endoleak existance.