Value of color ultrasound in evaluating the orifice of autologous arteriovenous fistula and blood flow velocity in hemodialysis patients
Objective To study the value of color ultrasound in evaluating autologous arteriovenous fistula(AVF)orifice and blood flow velocity in hemodialysis(HD)patients.Methods A total of 150 HD patients admitted to Tongchuan People's Hospital from February 2019 to February 2022 were included in the study.There were 87 males and 63 females,aged 41-69(56.82± 7.12)years.CT angiography and color ultrasound were performed in all subjects.According to the results of CT angiography,the patients were divided into a stenosis group(internal fistula stenosis,59 cases)and a non-stenosis group(normal internal fistula,91 cases).The blood flow at the proximal brachial artery(Qb),the proximal radial artery(Qr),the proximal fistula(Qf),and the proximal cephalic vein(Qc)of the two groups were compared.The receiver operating characteristic curve(ROC)was used to determine the effectiveness of color ultrasound parameters in the evaluation of autologous arteriovenous fistula stenosis in HD patients.In addition,the incidence of internal fistula complications was compared between the two groups.t test and x2 test were used.Results The levels of Qb,Qr,Qf,and Qc in the stenosis group were lower than those in the non-stenosis group[(377.45±103.46)ml/min vs.(491.52±136.71)ml/min,(320.58±102.99)ml/min vs.(410.89±138.46)ml/min,(476.12±112.57)ml/min vs.(566.43±129.85)ml/min,(519.04± 120.87)ml/min vs.(667.36±134.53)ml/min],with statistically significant differences(t=5.47,4.30,4.38,and 6.86,all P＜0.05).ROC analysis showed that the area under the curve of Qb in evaluating autologous arteriovenous fistula stenosis in HD patients was 0.854,and the sensitivity and specificity were 86.92％and 84.10％,respectively,which were higher than those of Qr,Qf,and Qc.The incidences of venous stenosis,thrombosis,and phletomatous dilatation in the stenosis group were higher than those in the non-stenosis group[23.73％(14/59)vs.6.59％(6/91),20.34％(12/59)vs.4.40％(4/91),37.29％(22/59)vs.17.58％(16/91)],with statistically significant differences(x2=9.10,9.55,and 7.35,all P＜0.05).Conclusion Color ultrasound can effectively evaluate AVF fistula and blood flow velocity in HD patients,and Qb has a best efficacy in diagnosing AVF stenosis in HD patients,which is worthy of popularization.
万方数据
维普
