【摘要】 目的　探讨上、下蒂型咽后壁瓣术后血管重建的一般规律。方法　将 10只杂种犬随机分为两组 ,每组 5只 ,分别作上、下蒂型咽后壁瓣手术 ,并分别于术后即刻、3、7、30、90d处死 ,用血管造影X线片研究其血管重建情况。结果　上蒂型咽后壁瓣术后血管重建快 ,3d即有贯穿全瓣的轴型血管网 ,30d轴型血管网已基本重建完成 ,其血供主要来自蒂部 ;下蒂型咽后壁瓣术后血管重建慢 ,其血管自瓣蒂及瓣尖软腭区逐渐向瓣中部生长 ;90d已完成轴型血管网的建立 ,其血供来自瓣蒂和瓣尖软腭区两方面。结论　上、下蒂型咽后壁瓣术后远期均可建立轴型血管网 ,血运丰富。更多还原

【Abstract】 Objective To elucidate the reconstruction of neovascularization that occurred in the superiorly and inferiorly based posterior pharyngeal flaps in different time postoperatively. Methods Ten mongrel dogs were randomly divided into two experimental groups,which were performed superiorly or inferiorly based posterior pharyngeal flap surgery respectively.Each group was then subdivided into five subgroups,and were sacrificed immediately after operation or on 3,7,30,90 day postoperative respectively.Microangiography was used to exhibite the vessel. Results ①The blood vessel reconstruction of the superiorly based posterior pharyngeal flap was more rapid compared with the inferiorly based flap.The 3-day flap has established an axial vascular network,which was mature on the 30-day flap.The superiorly based posterior pharyngeal flap was mainly supplied by the pedicle.②The blood vessels reconstruction of the inferiorly based posterior pharyngeal flap was firstly occurred in the pedicle and apex of the flap,which grew slowly to the middle of the flap.The inferiorly based posterior pharyngeal flap was supplied by the pedicle and the soft palate.A mature axial vascular network was exhibited on the 90-day flap,which was not mature on the 30-day flap. Conclusion Both superiorly and inferiorly based posterior pharyngeal flap can establish an axial vascular network and gain ample blood supply.;更多还原