The Role of Perivascular Soft tissue of the Grafted Veins

Journal of the Korean Society for Surgery of the Hand 2006;11(3):180-185.
Published online September 1, 2006.

Gi-Doo Kwon, Yong-Bum Yeo, Jeong-Ho Rho, Bong-Wan Cho, Byung-Moon Ahn

이식된 정맥에 부착되어 있는 정맥 주위 연부 조직의 역할

권기두, 여용범, 노정호, 조봉완, 안병문

Abstract

Purpose: This study was to evaluate the role of perivascular soft tissue of the vein grafts for the aneurysmal formation and patency rate. Materials and Methods: Fifteen New Zealand white rabbits underwent replacement of 2 cm bridge defects in the saphenous artery with vein graft conduits at both legs. Vein graft on the left saphenous artery defect included perivascular soft tissue (Group I) and the graft on the right side did not (Group II). At 30 minutes’and 2 weeks’postoperative intervals, aneurysmal formation and patency rates were assessed. Results: At postoperative 30 minutes, aneurysm was not formed in Group I, but in Group II 3 cases (20 %) formed aneurysm and at postoperative 2 weeks, 1 case (6.7 %) in Group I and 4 cases (26.7 %) in Group II. At postoperative 30 minutes, all grafted vessels were patent in both groups. At postoperative 2 weeks, patency was noted in 11 cases of 15 (73.3 %) in Group I and 9 cases of 15 (60 %) in group II. Group I had a significantly higher patency rate then Group II (p=0.031). Aneurysms showed marked thinning of the vein wall with high incidence of intraluminal thrombus formation with a typical layering pattern. Conclusion: This study demonstrated that the vein graft including perivascular soft tissue decreased the aneurysmal formation and increased the patency rate.