Laparoscopic end-to-end aortobifemoral bypass with reimplantation of the inferior mesenteric artery - An experimental study

Background: Colic ischemia is a serious complication that can occur after abdominal aortic surgery. It has been described in two patients after laparoscopic aortic surgery. The goal of the current experiment was to determine the feasibility of inferior mesenteric artery (IMA) reimplantation during laparoscopic aortobifemoral bypass (LAFB). Methods: Six piglets were submitted to the laparoscopic approach according to the "apron" technique previously described. The infrarenal aorta was clamped and an LAFB was performed using a dacron graft. The IMA was reimplanted in the body of the graft with a running 5-0 polypropylene suture. Results: Mean operation and dissection times were 282.5 min (range, 270-310 min) and 123 min (range, 110-140 min), respectively, with a mean blood loss of 108 mi (range, 80-150 mi). Aortic clamping and anastomotic times were 123 min (range, 110-135 min) and 33 min (range, 24-45 min), respectively. The IMA reimplantation took 55 min (range, 45-70 min). At autopsy, all anastomoses were patent with no stenosis nor leak. Conclusion: Laparoscopic IMA reimplantation during laparoscopic aortobifemoral bypass is feasible.