Self Made Bovine Pericardial Tube Grafts in Aortic Infection: A European Multicentre Study.

Weiss, Salome; Hugas Mallorqui, Maria; Czerny, Martin; Walter, Tim; Biro, Gabor; Puttini, Ilaria; Almasi-Sperling, Veronika; Lang, Werner; Schmidli, Jürg; Wyss, Thomas R (2024). Self Made Bovine Pericardial Tube Grafts in Aortic Infection: A European Multicentre Study. (In Press). European journal of vascular and endovascular surgery Elsevier 10.1016/j.ejvs.2024.02.004

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OBJECTIVE

This study examines outcome and durability of self made bovine pericardial tube grafts in aortic infections of all anatomic locations.

METHODS

This was a retrospective and prospective international multicentre study. Peri-operative and long term outcomes of patients undergoing aortic in situ reconstruction for native or graft infections with self made bovine pericardial tube grafts between January 2008 and December 2020 in four European tertiary referral centres were analysed. The primary endpoint was recurrent aortic infection. Secondary endpoints were persistent infection, aortic re-operation for infection, graft related complications, and mortality.

RESULTS

One hundred and sixty eight patients (77% male, mean age 67 ± 11 years) were identified: 38 (23%) with native and 130 (77%) with aortic graft infection. Thirty day mortality was 15% (n = 26) overall, 11% (n = 4), and 17% (n = 22) for native and aortic graft infections, respectively (p = .45). Median follow up was 26 months (interquartile range [IQR] 10, 51). Estimated survival at one, two, three, and five years was 64%, 60%, 57%, and 50%, and significantly better for native (81%, 77%, 77%, and 69%) than for graft infections (58%, 55%, 51%, and 44%; p = .011). Nine patients (5.3%) had persistent infection and 10 patients (6%) had aortic re-infection after a median of 10 months (IQR 5, 22), resulting in an estimated freedom from re-infection at one, two, three, and five years of 94%, 92%, 90%, and 86%. Estimated freedom from graft complications at one, two, three, and five years was 91%, 89%, 87%, and 87%.

CONCLUSION

This multicentre study demonstrates low re-infection rates when using self made bovine pericardial grafts, comparable to those of other biological grafts. The rate of graft complications, mainly anastomotic aneurysms and stenoses, was low, while graft degeneration was absent. Self made bovine pericardial tube grafts are an excellent tool for in situ reconstruction in the setting of native aortic infection or aortic graft infection.

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