Experimental study of a sleeve microanastomotic technique

Sleeve anastomosis is an end-to-end variant (i,e,, end in end) that makes i t possible to suture two vessels quickly and with few stitches. Various met hods have been described in the literature concerning experimental surgery (microsurgery and transplantation) and clinical microsurgery. The authors t ested for a method that would eliminate narrowing of the inserted vessel se gment and that would improve efficiency and feasibility of the technique, T he experimental study was performed in 60 rats weighing 200 to 400 g, Teles coping microanastomosis consists of hemi-invagination of a 2-mm-caliber art ery at high pressure (subrenal aorta), sidecut of the distal wall of the ex ternal arterial segment, and suture with three endoluminal stitches. A tota l of 61 anastomoses were subdivided in three groups: (1) one-sleeve anastom osis, (2) double-sleeve anastomosis with interposition of an arterial graft , and (3) a control series of conventional end-to-end anastomoses. Patency rates of 95% to 100% at 1 week and I month demonstrated no differences amon g groups.