Laparoscopic aortorenal bypass: A feasibility study

Purpose: To demonstrate the technical feasibility of laparoscopic aortorena l bypass in an acute porcine model. Materials and Methods: An aorta-to-left renal artery bypass using an interp osition Dacron graft was performed in five pigs, Intracorporeal laparoscopi c free-hand suturing and knot-tying were employed exclusively. Renoprotecti ve in-situ regional hypothermia was achieved intracorporeally by infusing i ce-cold heparinized saline into the renal artery using a balloon catheter, Results: The mean total surgical time was 325 minutes, and the mean renal i schemia time was 61 minutes, The end-to-side graft-to-aorta and end-to-end graft-to-renal artery anastomosis times were 34 minutes and 40 minutes, res pectively. The mean estimated blood loss was 66 mL. On revascularization, p rompt reperfusion of the kidney and Doppler-confirmed pulsation of the rena l artery was noted. Graft patency was confirmed on autopsy. Conclusion: Laparoscopic aortorenal bypass is feasible. This study represen ts the initial report in the literature. A long-term animal survival study is planned.