Abstract
Regular surveillance and pre-emptive correction of subclinical stenosis have been shown to be useful procedures for reducing the rate of vascular access (VA) failure. Blood flow (Qa) measurement is considered the best procedure for VA surveillance. Qa below 500 ml/min or reductions over 25% from preceding Qa measurements are predictors of VA thrombosis.
Highlights
Native arteriovenous fistula (AVF) is the vascular access (VA) of choice for chronic hemodialysis treatment
Regular surveillance of AVF flow with the blood temperature (BTM) combined with DUS is an effective method for early detection of autologous AVF dysfunction and prevention of thrombosis, which in turn allow successful AVF repair in a high percentage of cases
The results of this study show that regular surveillance of AVF blood flow with the BTM combined with Doppler-ultrasound when detected a low flow is an effective method for early detection of AVF dysfunction
Summary
Native arteriovenous fistula (AVF) is the vascular access (VA) of choice for chronic hemodialysis treatment. Compared with central vein catheters or arteriovenous grafts (AVG), AVF are associated with lower morbidity and mortality rates [1]. AVF dysfunction is a very common problem in patients on chronic hemodialysis, which causes numerous complications (i.e., decreased dialysis efficiency, use of temporal VA, infections, hospitalizations, etc.) [1,2]. Stenotic lesions due to intimal hyperplasia are the most common cause of AVF malfunction. Subclinical AVF dysfunction precedes its failure or thrombosis by weeks or months [3,4]. Close monitoring can be a helpful measure for detecting potential treatable lesions
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