Background: Arterial cryopreserved allografts are conduit of choice for arterial bypass in case of infection. They are sometimes submitted to accelerated degeneration: stenosis, thrombosis, or aneurysmal evolution. We hypothesized that ABO group and Rhesus compatibility could play a role in arterial cryopreserved allograft complications.
Methods: Patients who benefit from allograft bypass from 2006 to 2011 were retrospectively compared, regarding ABO or rhesus compatibility and irregular agglutinins.
Results: Seventy-two patients were included. Regarding ABO mismatch, there was no difference in terms of death (51% vs. 43%, P = 0.820), thrombosis (25% vs. 32%, P = 0.78), rupture (9% vs. 0%, P = 0.247), stenosis (3% vs. 12%, P = 0.331), aneurysmal degeneration (16% vs. 12%, P = 1), and 5 years of secondary patency rate (34% vs. 39%, P = 0.141). There was also no difference regarding Rhesus mismatch.
Conclusions: Allograft degeneration does not seem to be related to ABO mismatch. This degeneration could be related to another way of immunogenicity, particularly Human Leukocyte Antigen mismatch, and needs further exploration.
Copyright © 2016 Elsevier Inc. All rights reserved.