Renal Insufficiency
Conditions
Keywords
Dialysis
Brief summary
The incidence of hemodynamically relevant dialysis fistula stenoses/obstructions after 1 year is between 60-90% (from 62.5 to 91% radiocephalic, brachiocephalic 70-84%, PTFE shunts 62-87%), necessitating a therapeutic measure to preserve dialysis access during this period in 1/3 of the patients. This therapeutic measure is a dilatation of the stenosis using a standard PTA balloon (POBA, plain old balloon angioplasty with a primary technical success rate of 50-79% \[2-4\].In turn, in 21-50% of the cases an insufficient PTA result is obtained (so-called POBA-resistant stenosis). In these cases, predilatation with a so-called cutting balloon (carrying with small knives on its surface) is performed, leading to a success rate of 89%. However, a problem is the high incidence of restenosis, which is about 40% for recurrent stenosis and over 10% in de novo stenosis. The use of drug-coated balloon (DCB) in non-POBA resistant stenoses lead to a reduction in the restenosis rate of 35% to 5%. However, the effect of DCB in POBA resistant stenoses is unknown. Therefore, the aim of this study is to evaluate the clinical benefit of the combined use of a cutting balloon and a drug-coated balloon in POBA resistant dialysis fistula stenoses compared to the sole use of a cutting balloon.
Interventions
Angioplasty with drug-coated balloon Elutax (Aachen Resonance, Germany)
Angioplasty with plain old balloon Sterling (BostonScientific, Switzerland)
Sponsors
Study design
Eligibility
Inclusion criteria
* dialysis fistula dysfunction requiring cutting balloon angioplasty
Exclusion criteria
* missing informed consent or unable to consent * age \< 18 years * pregnancy
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Time to worsening of dialysis fistula function [days] | one year |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in lumen 12 months after PTA [mm] | one year | aka late lumen loss |
| Change in dialysis flow [ml/min.] | one year | — |
| Change in dialysis fistula flow [ml/min.] | one year | — |
Countries
Switzerland