目的 本文就内瘘动脉瘤形成的原因进行分析并探讨其预防措施。方法 选取我院透析患者80例，鼻烟窝内瘘9例，左、右前臂内瘘71例，其中在同侧行二次手术为16例；常规血液透析，内瘘穿刺方法为绳梯式和局域穿刺；透析后内瘘止血方法为弹力绷带压迫法和透明胶带结合指压法。结果 80例中有动脉瘤共13例，假性动脉瘤1例，其中血液透析后采用弹力绷带环扎止血的有12例，其余2例为透明胶带结合指压法，10例穿刺部位动脉瘤中有6例存在局域穿刺；瘘口手术术式在鼻烟窝、第二次瘘在同侧手臂及左、右前臂一次瘘处各出现2例动脉瘤，前两者出现动脉瘤几率较多。结论 内瘘动脉瘤形成与血管局部反复穿刺、透析后止血方式及动脉硬化等因素有关，分析动脉瘤形成原因、提出预防措施对内瘘的长期保护有一定帮助。

Objective To analyse the causes of native arterio-venous fistula aneurysm and to find prevention measures. Methods In 80 hemodialysis patients, there are 9 snuff-box arteriovenous fistulas and 71 brachiocephalic fistulas. Among them 16 patients had to made second fistulas in the same arm. Spring tape around the arm or applying pressure and adhesive tape on the puncture site were used to stop bleeding after dialysis. Results There are 13 aneurysms and 1 pseudoaneurysm in 80 hemodialysis patients. In these patients,12 of them used spring tape and 2 used adhesive tape on the site after hemodialysis. six patients have local needling. Tow aneurysms were found in each surgical way of fistula. Conclusion Arterial-venous fistula aneurysm formation is related with repeated localised puncture site, postdialysis haemostasis, atherosclerotic and so on. 