Abstract:

To reveal the relationship between doppler parameters and AVF dysfunction.
Ｍｅｔｈｏｄｏｌｏｇｙ：Doppler Ultrasonography(DU) was used to examine the AVF in MHD patients on the interval day.Monitoring indexes:blood flow,pulsatility index(PI),resistance index(RI),anastomosis diameter.
Ｒｅｓｕｌｔｓ：According to the function of AVF,patients were divided into wellfunctional group (115 cases) and dysfunctional group (29 cases).The blood flow volume and anastomosis diameter showed a significant reduction in dysfunctional group compared with wellfunctional group (80384±10891 ml/min vs 1 15062±636 ml/min and 047±002 cm vs 037±003 cm,respectively,P<005),the RI showed a significant increase in dysfunctional group compared with wellfunctional group (055±003 vs 048±001,P<001),We further grouped patients according to the quarterback of blood flow,RI,anastomosis diameter and analyzed the incidence of fistula dysfunction within each group.Finally,we found out that the incidence of fistula dysfunction increased significantly when the blood flow volume<6413 ml/min,the RI>041 and the anastomosis diameter <039 cm.
Ｃｏｎｃｌｕｓｉｏｎ：
This study confirmed that the AVF ultrasonic parameters and AVF dysfunction has good correlation.The DU examination could provide basis and references for AVF dysfunction early intervention.