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Dialysis patients: which imaging technique works best for blocked access?

NCT ID NCT02056704

Knowledge-focused Sponsor: Baylor Research Institute Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at 66 adults with blocked dialysis grafts or fistulas to see if adding an extra imaging tool (IVUS) to standard angiography helps doctors better understand the blockage. The goal was to compare how well each method measures the narrowing and size of the blood vessel. The study did not test a new treatment, but rather aimed to improve how blockages are assessed.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

66 people

The number who actually took part.

Started

Feb 2014

Finished

Feb 2022

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * \> 18 years old * Male or female (non-pregnant females) * Patients with hemodialysis access failure (arteriovenous fistulae or arteriovenous grafts) * Patients must undergo elective angiographies (fistulograms) based on surveillance duplex ultrasound findings (stenosis) * Patients with outflow stenoses between 1 cm distal to an arterial anastamosis and clavicle in AV fistulae or between venous anastamosis and clavicle in AV grafts found on surveillance duplex ultrasound Exclusion Criteria: * Patients with other etiologies (inflow lesions, intragraft lesions, hypercoagulable states, lesions not readily amenable to stenting), advanced failures (thrombosis, central venous occlusion), and non-routine access conformations (chest wall/groin grafts, balloon assisted maturation)

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Conditions

The condition(s) this trial relates to.

Constriction, Pathologic

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Dialysis access malfunction

Contacts and locations

Locations

  • Baylor Jack and Jane Hamilton Heart and Vascular Hospital

    Dallas, Texas, 75246, United States

  • Baylor Regional Medical Center at Plano

    Plano, Texas, 75093, United States

  • Baylor University Medical Center

    Dallas, Texas, 75246, United States

  • The Heart Hospital Baylor Plano

    Plano, Texas, 75093, United States

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