New Model of Micro Surgical Training: Femoral Graft Anastomosis Graft-Aorta-Renal Artery

Introduction: The different models of micro surgical training aim to train surgeons in the various techniques and common scenarios. Progressively with increasing demand for procedures requiring the use of micro -surgical techniques are required new models how integrate different techniques and to be closer to the required daily scenarios.

A new mouse model with segmental graft of superficial femoral artery with latero -terminal aorta - graft suture, and termino-terminal graft - renal artery suture -is presented in the current study.

Methodology and Material: A new experimental mouse model of practice was conducted in the experimental surgery center Parc Tauli Hospital that integrates several practices conducted previously within the advanced microsurgery course. Mice weighing between 200-300 gr positioned supine anesthetized, 2 approaches were made: Perpendicular to the left inguinal fold and medial laparotomy. In the first half, the femoral vessels dissection was performed and the superficial femoral artery was isolated, ligature of collateral branches and resecting an arterial segment to be grafted. In the second half the abdominal organs to the right were rejected, the abdominal aorta and left renal vessels were dissected. Aortic side window was performed and aortic- graft (latero-terminal) was sutured, subsequently termino-terminal suture between graft and renal artery was maided. Permeability test was conducted anterograde and retrograde checking the 2 sutures and the renal venous return was evaluated as a functional assessment of renal blood flow in 5 models looking the most frequent causes of failure of the technique.

Results: The study is currently in development since the models are performed by the former surgeon in the annual advanced course in micro surgery as thesis.

Conclusions: We consider the new experimental model as a viable option that can be done in different courses of advanced surgical training integrating micro surgical dissection, vascular graft with termino-lateral termino-terminal sutures; with the ability to functionally assess renal venous outflow as indirect sign of a proper restoration of renal perfusion in a successful technique.