Paclitaxel for the Treatment of Upper-Extremity Arteriovenous Access Fistula Stenosis

Summary

The objective of this study is to evaluate the safety and effectiveness of the use of intravascular paclitaxel, in addition to standard therapy, for the treatment of arteriovenous dialysis access fistula stenosis.

A fistulogram will be performed in standard fashion. The diagnostic component will include evaluation of the inflow artery, arterial anastomosis and full length of the fistula vein or graft, plus venous return up to the heart. The location, vessel size, lesion diameter and percent stenosis for each lesion will be recorded. Enrollment and randomization will occur at this point.

All patients will then receive standard therapy for their stenosis. This will include intravenous heparin administered in a standard dose of 70 units/kg. Lesions that respond poorly to angioplasty (\>30% residual stenosis after angioplasty treatment with 2 inflations) will be stented. Stent selection will be based on clinical setting. Initial stent treatment will utilize an uncovered nitinol stent. Treatment of in-stent restenosis will include initial balloon angioplasty, and use of a covered stent (Viabahn, GORE, or Fluency, Bard). Documentation of location and type of treatment for each lesion treated will be recorded.

Once standard treatment is completed, the operating surgeon will be informed of the patient randomization: treatment (paclitaxel) or control. For subjects assigned to treatment, Paclitaxel solution treatment of each lesion encountered from proximal to distal will be attempted until the 20 mg Paclitaxel dose limit is met.

A TAPAS infusion catheter will be used for all paclitaxel dose administrations. The TAPAS infusion catheter will be positioned to reduce the presence of branches which permit the loss of paclitaxel from the treatment zone. After the full outflow vein segment is treated, the fistulogram is completed in the standard fashion. Prior to removal of the sheath, a final angiographic study of all areas treated is performed to document patency and lesion appearance.

For the control group, instead of paclitaxel administration, a sham treatment period of 10 minutes is allowed to elapse followed by the performance of the final completion angiogram. Any additional lesions identified with this study are then treated appropriately following standard technique.

All patients will follow the same follow up evaluation schedule.

Conditions

• Fistula Stenosis

Interventions

DRUG

Paclitaxel

Paclitaxel solution treatment of each lesion encountered will be attempted until the 20 mg Paclitaxel dose limit is met. The volume administered will depend on the diameter and length of the venous outflow segment.

PROCEDURE

Standard Therapy

Standard treatment of all stenotic lesions will be carried out in the usual fashion. Intravenous heparin will be administered in a standard dose of 70 units/kg. Lesions that respond poorly to angioplasty (\>30% residual stenosis after angioplasty treatment with 2 inflations) will be stented. Stent selection will be based on clinical setting. Initial stent treatment will utilize an uncovered nitinol stent. Treatment of in-stent restenosis will include initial balloon angioplasty, and use of a covered stent (Viabahn, GORE, or Fluency, Bard).

Sponsors & Collaborators

• Spectranetics Corporation

  collaborator INDUSTRY

• Englewood Hospital and Medical Center

  lead OTHER

Principal Investigators

• Kurt Wengerter, MD · Englewood Hospital and Medical Center

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2013-05-31

Primary Completion

2015-06-30

Completion

2015-06-30

Countries

• United States

Study Locations