Long-term dilatation of polyester and expanded polytetrafluoroethylene tube grafts after open repair of infrarenal abdominal aortic aneurysms

Abstract

After a mean implantation of 6 years, the ePTFE/Gore, polyester/Braun, and polyester/Vascutek tube grafts presented with significant differences. The ePTFE grafts showed a stronger resistance against dilatation than the two types of polyester grafts. Owing to similar perioperative and postoperative courses, no advantage could be identified in any group concerning the overall outcome. Vascular implants for OSR of AAA made of ePTFE and polyester are safe, even after a long implantation time. Therefore, the choice of the suitable graft does not depend on its postimplantation dilative characteristics. The outcome is not likely to be connected with dilatation of the implanted graft, because a causal connection between graft dilatation and death cannot be made. The study does not offer a basis for the preference of one of the three graft types. Nevertheless, continuous ultrasound examinations should be performed after implantation of an aortic tube graft to identify possible problems arising from changes in the graft and the residual vascular branches over time.

Vascular scaffolds with enhanced antioxidant activity inhibit graft calcification

“…In addition to the problem of calcification, dilation of vascular grafts could lead to severe anastomotic failure, aneurysms, ruptures and hemorrhage, as has been observed in autologous venous grafts,[59, 60] Dacron grafts,[61, 62] and decellularized xenografts. [63, 64] Strategies to stabilize ECM-based vascular grafts to prevent dilation include chemical crosslinking using carbodiimide chemistry to reduce ECM degradation[63] and perivascular polymer coating with electrospun PCL to prevent expansion.…”

Anévrismes de l’aorte abdominale sous-rénale rompus: aspects chirurgicaux à Dakar: à propos de 6 observations

“…L’étude de Stollwerck et al [ 7 ] montre que les prothèses en PTFE, plus souvent utilisées dans notre pratique, présentent une plus grande résistance à long terme par rapport aux prothèses en polyester (dacron). Les pertes sanguines dans notre courte série sont de 675 ml en moyenne.…”

Aortic banding and endovascular aneurysm repair in a case of juxtarenal aortic aneurysm with unsuitable infrarenal neck

“…11,12 At present, there is no evidence to choose polytetrafluoroethylene or polyester. 13 After open repair, also after neck reshaping, in the case of postoperative dilatation, there is no evidence to rule out new treatment of the same type.…”