Abstract:Objective To analyze the color Doppler ultrasound images feature of renal failure(RF)patients with hemodialysis hypoperfusion after renal fistulation.Methods 70 patients with RF with hemodialysis hypoperfusion after renal fistulation treated in our hospital from January 2010 to May 2016 were chosen.The characteristics of blood flow of cephalic vein,radial artery and anastomotic stoma,hemodynamic parameters,shape and diameter were observed in patients with RF.In addition,the degree of vessel stenosis was also measured.Results 49 cases(70.0%)were with thrombosis.of whom 31 cases had stenosis and 18 cases had completed occlusion;14 cases(20.0%)were with anastomotic scar contraction,of whom 8 cases had severe stenosis and 6 cases had moderate stenosis;4 cases(5.7%)were with local hematoma compression,of whom 2 cases had moderate stenosis and 2 cases had occlusion;3 cases(4.3%)were with anastomotic operative stenosis in moderate degree.Conclusion Anastomotic scar contraction,thrombosis,local hematoma compression and anastomotic operative stenosis etc.are the main reasons causing hemodialysis hypoperfusion after fistulation in patients with RF.Vascular occlusion and stenosis are the causes of hemodynamic hypoperfusion.The color Doppler ultrasound has important clinical value in monitoring hemodialysis hypoperfusion after renal fistulation.