Accuracy of doppler ultrasonography in the evaluation of hemodialysis arteriovenous fistula maturity

Abstract

<sec><title>OBJECTIVE:</title><p> to determine the accuracy of Doppler ultrasonography (USD) for hemodialysis arteriovenous fistula (AVF) maturity.</p></sec><sec><title>METHODS:</title><p> we included patients with no prior AVF. Each patient underwent two USD examinations. After initiation of hemodialysis, we followed the patients during the first month of the access use and verified its adequacy to hemodialysis sessions. At statistical analysis we measured specificity, sensitivity, accuracy, ROC curve (Receiver operator characteristic) curve, TG-ROC (Two graph - receiver operator characteristic) and logistic regression.</p></sec><sec><title>RESULTS:</title><p> we included 76 patients, of which 51 completed the study. They formed two groups, those who have had good adequacy for hemodialysis (45) and those who had not (6). The average flow volume (FV) and the average draining vein diameter (DVD) of each group were, respectively: 940mL/min (95% CI: 829-1052) and 325mL/min (95% CI: 140-510); and 0.48cm (95% CI: 0.45-0.52) and 0.33cm (95% CI: 0.27-0.40). The area under the ROC curve of FV and DVD were 0.926 and 0.766, respectively.</p></sec><sec><title>CONCLUSION:</title><p> the accuracy of the measured volume flow measured at the draining vein to evaluate maturation of hemodialysis arteriovenous fistula was 85%.</p></sec>

Role of Doppler Evaluation in Assessing the Maturation of the Arteriovenous Fistula for Hemodialysis: An Observational Study

“…We found an increase in FV and draining vein diameter. Similarly, Fonseca et al found an increase in both FV and draining vein diameter [25], thus confirming the existence of a maturation process for better vascular access.…”

Tromboembolismo em artéria femoral direita de um felino: análise dopplervelocimétrica

“…Estudos clínicos demonstram a acurácia e a comparação dos índices Doppler com outros métodos (Moreira, 2009;Fonseca Junior et al, 2015). O reconhecimento e a caracterização de alterações hemodinâmicas dos vasos sanguíneos das diversas espécies existentes são imprescindíveis para um diagnóstico eficaz do tromboembolismo.…”

Ultrasound-guided percutaneous transluminal angioplasty in the treatment of autologous arteriovenous fistula and its prognostic factors

“…It also more accurately determines the exact location, extent and true cause of AVF stenosis. Determining the type of AVF stenosis is more conducive to select the effective intervention methods, so that patients with AVF can restore stula function and undergo hemodialysis in a short time [24,25] . In addition, intraoperative ultrasound can guide puncture and catheterization to evaluate blood ow and PTA effect in real time, reduce the risk and time of surgery and reduce the possibility of intraoperative complications.…”