Abstract: Objective To observe the effects of early application of the native arteriovenous fistula(AVF) after removed thrombus operation. Methods 50 maintenance hemodialysis patients were randomly divided into two groups, whose AVF were mature and suffered from obstruction after been applicated. ALL of them received removed thrombus operation and anastomosis. The observation group 25 cases used AVF 1 month later, while the control group 25 cases used AVF within 1 week. The blood flux, using time, and relative complications were compared. Results (1)The blood fulx of all AVFs maintained or overed 235ml/min after using 1 month, 3 month, 6 month and 12 month, and there were no statistical differences between both groups. (2)The using time of AVFs overed 1 year in the two groups. (3)8 cases occurred aneurysm, 9 cases occurred stenosis of AVF in control group, while 2 cases occurred aneurysm, 3 cases occurred stenosis of AVF in observation group. There were obviously statistical differences between both groups. 7 cases occurred hypodermal hematoma in control group, while 5 cases occurred in observation. There were no statistical differences between both groups. No vein embolism wer in two groups. Conclusion The early application of the AVF after removed thrombus operation is safety and effective, and can induce the incidence of complication. Early application of the AVF can lighten patients’ pains and economical burdens.

Key words: Arteriovenous fistula, Maintenance hemodialysis, Thrombosis