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Venous stents for post-EVAR graft limb kinking: two case reports.
Henrique Guedes da Rocha1, Carlos Veterano1, Paulo Almeida1
1Department of Angiology and Vascular Surgery, Centro Hospitalar Universitário de Santo António, Unidade Local de Saúde de Santo António, Porto, Portugal.
Vascular
|April 28, 2025
Summary
Dedicated venous stents show promise for treating graft limb kinking after endovascular aneurysm repair (EVAR). These flexible stents successfully managed kinking in two cases, suggesting potential for reduced occlusion rates in complex anatomies.
Area of Science:
- Vascular Surgery
- Endovascular Interventions
- Medical Device Technology
Background:
- Graft limb kinking is a recognized complication following endovascular aneurysm repair (EVAR).
- This complication is more prevalent in patients with challenging iliac anatomy, such as tortuosity.
- Current management strategies and preventative measures for post-EVAR graft limb kinking are not well-standardized.
Purpose of the Study:
- To evaluate the feasibility and early clinical outcomes of using dedicated venous stents.
- To assess the efficacy of venous stents in treating severe graft limb kinking after EVAR.
Main Methods:
- Case report of two patients experiencing graft limb kinking one year post-EVAR.
- Treatment involved the implantation of dedicated venous stents to address the kinking.
Main Results:
- Successful treatment of severe graft limb kinking in both patients using dedicated venous stents.
- No aortic-related events were observed in either patient during the follow-up period.
- Dedicated venous stents demonstrated adaptability in complex anatomical vessels.
Conclusions:
- Dedicated venous stents represent a viable option for managing post-EVAR graft limb kinking.
- The flexibility and high radial force of venous stents may contribute to lower early occlusion rates.
- Further research is warranted to compare venous stents with bare-metal stents and refine treatment strategies.
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