Although there were more interventions needed for access salvage in the patients with prosthetic graft implants, we may conclude that patients with poor forearm vessels do benefit from implantation of a prosthetic graft for vascular access.
These data show a significantly better primary and assisted-primary patency in the BBAVF group compared with the PTFE group. Furthermore, in the BBAVF group, fewer interventions were needed. Therefore, we conclude that BBAVF is the preferred choice for vascular access if RCAVF or BCAVF creation is impossible, or when these types of access have already failed.
During 12 years of follow-up, there was no survival difference between patients who underwent open or endovascular abdominal aortic aneurysm repair, despite a continuously increasing number of reinterventions in the endovascular repair group. Endograft durability and the need for continued endograft surveillance remain key issues.
The PSV ratio is the most important parameter to grade aortoiliac stenoses into < 20%, 20% to 49%, 50% to 74%, and 75% to 99% categories, but additional parameters such as absolute PSV value, EDV, and the presence or absence of reverse flow and spectral broadening in the Doppler spectrum are helpful in gradation.
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