All had abnormalities in ultrasound image, 1 had elevation in VDP, R were normal and access flow were over 400ml/min.

• 结果 2 6例患者中 5例存在通路功能不良且均出现超声显像异常 ,仅 1例动态透析静脉压升高 ,未出现通路再循环升高和血流量降低。