tailieunhanh - Báo cáo khoa học: "Clinical and pathological assessment of different suture techniques for microvascular anastomosis in rat femoral artery"

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Clinical and pathological assessment of different suture techniques for microvascular anastomosis in rat femoral artery | J. Vet. Set. 2007 8 3 269-273 JOURNAL OF Veterinary Science Clinical and pathological assessment of different suture techniques for microvascular anastomosis in rat femoral artery Khaled Radad1- Mohamed El-Shazly2 1 Department of Pathology Faculty of Veterinary Medicine and2Department of Plastic Surgery Faculty of Medicine Assiut University Assiut 71526 Egypt This study examined the clinical and pathological features after a microvascular anastomosis of a rat femoral artery using four different suture techniques. Sixty Sprage-Dawely rats were divided randomly into 4 groups. Fffteen bisected arteries one from each animal in Group I II III and IV were sutured with the simple interrupted suture continuous suture sleeve suture and cuff suture respectively. The anastomosis times in Group I II III and IV were and min respectively. Immediate bleeding that stopped without intervention grade I was observed in 67 73 and 60 of the anastomosed vessels in Groups II III and IV respectively while 60 of the vessels in Group I showed light bleeding that was inhibited by gentile pressure grade II . All vessels examined appeared to be patent at 5 and 15 min after the anastomosis. On the 7th day postoperatively the vessels of Group I showed the highest patency rate 93 compared with Groups II 67 III 73 and IV 87 . Moreover there were more pronounced pathological changes in Group I than in the other groups. These changes included endothelial loss endothelial proliferation degeneration and necrosis of the tunica media. Suture materials surrounded by an inflammatory reaction were also observed. In conclusion the simple interrupted suture is preferable for microvascular anastomosis due to its highest patency rate. The other techniques investigated can be good alternatives because of their short anastomotic time and moderate pathological changes. Key words anastomosis microsurgery pathology suture Introduction Suitable suture techniques which reduce the surgery time