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During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.
Preparing your E-Poster
Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.
E-Poster Submission Deadline
Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.
Please follow the instructions below to input your abstract title.
Abstract titles should be brief and reflect the content of the abstract.
The effectiveness of hemodialysis largely relies on the proper function of an arteriovenous fistula (AVF), defined by sufficient blood flow and low vascular resistance. Nevertheless, evidence regarding the factors influencing Doppler ultrasonography (DUS) findings in long-term (≥5 years) hemodialysis (HD) patients in Indonesia remains scarce. The aim of this study is to assessing determinants of AVF characteristics, including blood flow volume (Qa), resistance index (RI), and pulsatility index (PI), as measured by DUS in long-term hemodialysis patients.
Cross-sectional study, 51 adult patients receiving maintenance hemodialysis via native AVF at a tertiary referral center were evaluated. Blood flow (Qa), resistance index (RI), and pulsation index (PI) were assessed using DUS. Demographics, comorbidities, dialysis parameters (duration, Kt/V), serum markers (calcium, phosphorus, albumin, hemoglobin), and Malnutrition-Inflammation Score (MIS) were recorded. Spearman and Pearson correlation analyses examined associations between technical characteristics, Qa, RI, PI, and Qa/RI ratio and continuous variables. Binary logistic regression identified independent predictors.
AVF location showed a significant negative correlation (r = −0.396; p = 0.004), where radiocephalic fistulas (RC) had lower blood flow compared to brachiocephalic fistulas (BC). Analysis of the RI showed that only albumin had a significant positive correlation (r = 0.285; p = 0.043). The Qa/RI ratio value was positively correlated with vascular diameter (r = 0.367; p = 0.008), aneurysm (r = 0.353; p = 0.011), and underlying Chronic Pyelonephritis disease (PNC) (r = 0.326; p = 0.020). In contrast, the AVF location showed a negative correlation (r = −0.422; p = 0.002), suggesting that distal fistulas (RC) had a lower Qa/RI ratio than proximal fistulas (BC). Phosphorus levels appeared to have a slight negative relationship with the Qa/RI ratio (p = 0.061). Tortuousity had a significant positive correlation with PI (r = 0.394; p = 0.004) and calcification showed a trend towards increased PI (r = 0.245; p = 0.083), although not statistically significant.
Anatomical and technical factors of the AVF (especially diameter, presence of aneurysm, tortuousity, and fistula location) had the strongest influence on DUS functional indicators (Qa, Qa/RI, and PI). Clinical and laboratory factors such as albumin showed a limited relationship only with RI, while other factors such as age, gender, duration of HD, Body Mass Index (BMI), and Kt/V did not have a significant effect.
