Sayers R D, Thompson M M, Nasim A, Bell P R
Department of Surgery, Leicester Royal Infirmary, UK.
Br J Surg. 1994 Aug;81(8):1107-10. doi: 10.1002/bjs.1800810808.
Endovascular repair of abdominal aortic aneurysm (AAA) has been performed using both a single proximal stent technique and a double (proximal and distal) stent method to anchor a graft in the aneurysm lumen. This study examined the effect of the single proximal stent technique on femoral artery blood flow, renal function and the occurrence of back-bleeding into the aneurysm sac in a canine model; eight dogs were used. Femoral artery blood flow and glomerular filtration rate were not affected by graft-stent insertion. Two graft-stent combinations failed to deploy in the correct position and led to graft thrombosis in one case. The six correctly positioned grafts all showed back-bleeding from around the distal end into the aneurysm sac. The single proximal stent technique for endovascular repair of AAA is inadequate and attention should continue to focus on a double (proximal and distal) stent method or a bifurcated system.
腹主动脉瘤（AAA）的血管内修复已采用单近端支架技术和双（近端和远端）支架方法，将移植物固定在动脉瘤腔内。本研究在犬模型中检验了单近端支架技术对股动脉血流、肾功能以及血液回流入动脉瘤囊的影响；共使用了8只犬。移植物-支架植入未影响股动脉血流和肾小球滤过率。有两种移植物-支架组合未能正确植入，其中1例导致移植物血栓形成。6个正确植入的移植物均显示有血液从远端周围回流入动脉瘤囊。用于腹主动脉瘤血管内修复的单近端支架技术并不充分，应继续关注双（近端和远端）支架方法或分叉系统。
