Objectives of the Study:~Hypothesis: Drug-coated balloons improve functional and patency outcomes of failing/dysfunctional hemodialysis fistulas compared to plain uncoated balloons~Aim of the Study:~Compare the effectiveness of drug-coated balloons to plain balloon angioplasty in reducing stenosis rates in dialysis AVFs.~Specific Objectives:~Primary functional endpoint: Access circuit patency based on functional criteria at 12 month.~Primary safety endpoint: Peri procedural complication rate~Secondary endpoints:~Technical success (<30% residual stenosis without postdilation)~Access circuit dysfunction free survival (Time to event) based on functional criteria~Target lesion restenosis free survival (Time to event) (in case of new lesion causes circuit dysfunction)
Compare the effectiveness of drug-coated balloons to plain balloon angioplasty in reducing stenosis rates in dialysis arteriovenous fistulas (AVFs).