Branched hybrid prosthesis: in vivo experimental study
A.A. Shadanov- A.M. Chernyavskiy
- D.A. Sirota
- M.M. Lyashenko
- S.V. Vladimirov
- T.P. Timchenko
- A.A. Dokuchaeva
- V.P. Borodin
- A.K. Sabetov
- D.V. Khomushku
- M.N. Murtazaliev
- Ya.L. Rusakova
- E.V. Kuznetsova
- I.Yu. Zhuravleva
Published 2024-08-30
Keywords
- Animals,
- Aorta, Thoracic,
- Blood Vessel Prosthesis,
- Frozen Elephant Trunk,
- Stents
- Swine,
- Subclavian Artery ...More
How to Cite
Copyright (c) 2024 Shadanov A.A., Chernyavskiy A.M., Sirota D.A., Lyashenko M.M., Vladimirov S.V., Timchenko T.P., Dokuchaeva A.A., Borodin V.P., Sabetov A.K., Khomushku D.V., Murtazaliev M.N., Rusakova Ya.L., Kuznetsova E.V., Zhuravleva I.Yu.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
Introduction: The development of a new generation of hybrid prostheses is a way to improve the results of surgical treatment of combined lesions of the aortic arch and descending aorta.
Objective: The study was aimed to evaluate the biocompatibility of the new branched hybrid stent graft.
Methods: The developed hybrid stent graft consisted of two parts including the vascular part and the stent graft part, which were supplemented with a stented branch for reconstruction of the left subclavian artery. To assess the biological compatibility, a stent graft was implanted in the descending thoracic aorta in 25 large pigs. The results were assessed by surgical mortality, postoperative complications, selective aortic angiography and histological examination after 6 month follow up period.
Results: Implantation of a hybrid stent graft was successful in all cases, without complications. In the early period, 3 animals died. The causes of animal death were respiratory failure caused by lung barotrauma, intraoperative bleeding and sudden cardiac death. The remaining pigs survived until the end of the follow up period without complications and were subsequently withdrawn from the experiment. The duration of perfusion by carotid-femoral bypass surgery was 55 [50; 60] minutes. The volume of blood sweating through the vascular part of the prosthesis was 2.28 ± 0.23 ml/cm2/min; the blood loss for the first hour through drain tube was approximately 70.2 ± 8.9 ml. In 6 months after surgery the aortic angiography showed that the main body and branches of the hybrid stent graft were completely passable. No migration, deformation or endolics were observed. The analysis of histological sections showed the presence of a confluent layer of neointima continuously and evenly distributed throughout the luminal surface of the conduits, including lateral branchlets and anastomoses. The neointima was hyperplasized and represented by layers of unidirectional fibroblast cells, its luminal surface was covered with a layer of endotheliocytes.
Conclusion: These results demonstrate the technical feasibility and safety of using a new hybrid stent graft with an additional stented branch.
Received 16 July 2024. Revised 1 August 2024. Accepted 15 August 2024.
Funding
The study was carried out within the framework of project No. 22-15-20005 (agreement No. 22-15-20005 with the Russian Science Foundation, dated 22.03.2022, agreement No. р-12 with the Ministry of Science and Innovation Policy of the Novosibirsk Region, dated 13.03.2023).
Conflict of interest
The authors declare no conflict of interest.
Contribution of the authors
Conception and study design: A.M. Chernyavskiy, I.Yu. Zhuravleva, D.A. Sirota, A.A. Shadanov
Data collection and analysis: A.A. Shadanov, D.A. Sirota, M.M. Lyashenko, S.V. Vladimirov, T.P. Timchenko, A.A. Dokuchaeva, V.P. Borodin, A.K. Sabetov, D.V. Khomushku, M.N. Murtazaliev, Ya.L. Rusakova, E.V. Kuznetsova
Statistical analysis: A.A. Shadanov
Drafting the article: A.A. Shadanov, D.A. Sirota
Critical revision of the article: I.Yu. Zhuravleva, D.A. Sirota, A.M. Chernyavskiy
Final approval of the version to be published: A.A. Shadanov, A.M. Chernyavskiy, D.A. Sirota, M.M. Lyashenko, S.V. Vladimirov, T.P. Timchenko, A.A. Dokuchaeva, V.P. Borodin, A.K. Sabetov, D.V. Khomushku, M.N. Murtazaliev, Ya.L. Rusakova, E.V. Kuznetsova, I.Yu. Zhuravleva
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