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Type: Artigo
Title: Experimental Model For Sutureless Proximal Anastomosis By The Viabahn Open Revascularization Technique (vortec)
Author: Dias Freire
Lucas Marcelo; Gobbi
Giuliana Biasi; Dal Fabbro
Inacio Maria; Menezes
Fabio Husemann
Abstract: In the treatment of complex aneurysms, debranching is an extra-anatomical revascularization of visceral arteries followed by endograft coverage of the thoracoabdominal aorta. It eliminates the need for a thoracotomy and aortic clamping, but requires the performance of several technically demanding visceral anastomosis. In 2008, Lachat described visceral revascularization with the use of a sutureless distal anastomosis, performed by the telescoping of an endograft in the visceral branch, named VORTEC (Viabahn Open Revascularization TEChnique). Objective: An experimental model was created to test the feasibility and short term results of performing a telescoped proximal anastomosis to the abdominal aorta. Methods: Swine model. The abdominal aorta was dissected and ligated between the renal arteries and the iliac vessels. Three centimeters bellow the renal arteries a Viabahn endograft was telescoped for 2 cm into the proximal aorta. The other extremity was conventionally anastomosed to the distal aorta. Patency, sealing and tensile strength of the anastomosis were tested. Results: Time for performing the telescoped anastomosis was shorter (5.4 +/- 2.8 min versus 10.3 +/- 3.4 min, P<0.05). All grafts were patent and both types of anastomosis presented no bleeding. Immediate tensile strength showed a higher strength of the conventional suture (22.7 x 14.3 N, P<0.09). After 30 days there was no pseudo-aneurysms and the strength of the conventional and VORTEC anastomosis were similar (37.3 x 40.8 N, respectively, P=0.17). Conclusion: Telescoped proximal anastomosis by the technique of VORTEC is feasible. After 30 days the tensile strength of the both anastomosis were similar.
Subject: Anastomosis, Surgical
Models, Animal
Editor: Soc Brasil Cirurgia Cardiovasc
São Paulo
Rights: aberto
Identifier DOI: 10.5935/1678-9741.20160087
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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