Study comparing the accuracy of colour duplex ultrasound with digital subtraction angiography in the diagnosis of native Fistula stenosis

5^th Global Nephrologists Annual Meeting

March 31-April 02, 2016 Valencia, Spain

John Swinnen

Australia

Posters & Accepted Abstracts: J Nephrol Ther

Abstract :

Aim/Objectives: To compare the accuracy of colour duplex ultrasound with digital subtraction angiography in the diagnosis of native Fistula stenosis. Method: Colour duplex US scans of 93 dialysis patients with dysfunctional AVF were compared with fistulograms performed within 6 weeks of the US. The AVF circuit was divided into six zones for the purpose of the study. Colour duplex US and fistulogram images/reports were independently re-reported for stenoses in each fistula zone by two trained clinicians blinded to the other modality. Kappa analysis of the results was performed to assess the accuracy of colour duplex US in the dysfunctional AVF circuit. Results: Congruence of results between US and fistulograms ranged from 85% to 96%, depending on the zone examined. Kappa analysis of this US versus fistulogram data was also moderate to good, ranging from 0.72 and 0.91. Conclusions: Colour duplex US provide an accurate diagnostic assessment of a dysfunctional autogenous AVF. It is particularly accurate in the peri-anastomotic area of the fistula which harbours the majority of fistula problems.

Biography :

Email: john_swinnen@bluebottle.com