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Fistula clinical trials

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NCT ID: NCT01391975 Withdrawn - Renal Failure Clinical Trials

Surveillance and Proactive Intervention for Dialysis Access

SPIDA
Start date: n/a
Phase: N/A
Study type: Interventional

Newly formed dialysis fistulae can often fail, and failure is usually due to narrowing of the blood vessels. Methods of detecting narrowing are available and, more importantly, can detect narrowings before a fistula fails. It is not known whether treating these narrowings will actually improve fistula survival or if the majority can be left alone. we wish to see if we can detect such narrowings with ultrasound scanning and if early detection and treatment improves patient outcomes.

NCT ID: NCT00621972 Withdrawn - Acute Renal Failure Clinical Trials

AV Fistula Salvage in Advanced CKD Using Sodium Bicarbonate Prophylaxis

Start date: January 2008
Phase:
Study type: Observational

This is an observational study assessing the impact of conventional dose iodinated contrast on the renal function of advanced chronic kidney disease patients undergoing arteriovenous fistula evaluation using a standard sodium bicarbonate prophylaxis protocol. In addition, this model allows for pre and post procedure measurements of kidney function, providing a unique opportunity to assess the utility of novel biomarkers for contrast-induced kidney injury. Our primary hypothesis is that there will be no change in serum creatinine post-procedure when using a standard sodium bicarbonate prophylaxis protocol. Our secondary hypothesis is that there will be no change in urinary kidney-injury marker-1 (KIM-1) post-procedure using a standard sodium bicarbonate prophylaxis protocol. In addition, we will assess the impact of different patient characteristics on the development of contrast-induced kidney injury, such as diabetes, coronary artery disease, hypertension, and angiotensin converting enzyme inhibitor therapy.

NCT ID: NCT00543348 Withdrawn - Stenosis Clinical Trials

RCT of the Cutting Balloon Versus a High Pressure Balloon for the Treatment of Arteriovenous Fistula Stenoses

Start date: September 2007
Phase: N/A
Study type: Interventional

The proposed study will investigate the efficacy of the peripheral cutting balloon (PBC) compared to the high pressure balloon in dilating venous stenosis in hemodialysis fistulas. 2. SPECIFIC AIMS Study endpoints will be: Primary Endpoint 1. Primary and assisted patency at 6 months Secondary Endpoints: 1. Procedure effectiveness/residual stenosis 2. Procedure-related complications 3. Primary patency and primary assisted patency 12 months 4. Secondary patency at 6 and 12 months 5. Number/type of secondary interventions.