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New study tracks kidney health after aortic stent surgery

NCT ID NCT01654133

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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 follows 770 people who had aortic aneurysm repair using branched stent grafts. Researchers will check kidney function and other organ health over two years to see how different stent designs affect outcomes. The goal is to learn which approaches work best for preserving organ function.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
branched stent graft (device)
What this could lead to
If successful, this could help doctors choose the best stent graft design to preserve kidney function after aortic aneurysm repair.
What could go wrong
This is an observational study, not a treatment trial, so it won't directly improve outcomes. Results may not apply to all patients or devices.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 770 people

The number the study aims to enrol. It can still change while the study runs.

Start date

Jul 2012

Expected to finish

Aug 2035

An estimate. End dates often move.

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.

Cohort 1 (TAAA) Inclusion Criteria: Patients may be included in the study if the patient has at least one of the following and has aortic anatomy appropriate for treatment with the Zenith® p-Branch™, Zenith® t-Branch, or Physician Specified TAAA Endovascular Graft (Custom Manufactured Devices). 1. Aortic Aneurysm Diameter a. TAAA (Type I - IV) (including pararenal subtypes) with orthogonal aortic diameter greater than or equal to 5 cm or b. greater than two times the normal aortic diameter 2. Rapid aortic enlargement (\> than or equal to 5mm in 1 year) 3. Presence of a saccular aneurysm at risk for rupture based on investigators evaluation 4. Iliac artery aneurysm ˃2.2 cm may be treated with the Zenith® Branch Endovascular Graft-Iliac Bifurcation when the iliac artery aneurysm is associated with the qualifying thoracoabdominal aneurysm treated in this study Exclusion Criteria: General Exclusion Criteria Patients must be excluded from the study if any of the following conditions are true: 1. Less than 18 years of age 2. Unwilling to comply with the follow-up schedule 3. Inability or refusal to give informed consent Medical Exclusion Criteria Patients must be excluded from the study if any of the following conditions are true: 1\) Known sensitivities or allergies to stainless steel, nitinol, polyester, solder (tin, silver), polypropylene, urethane or gold 2) History of anaphylactic reaction to contrast material that cannot be adequately premedicated 3) Leaking, ruptured aneurysm associated with hypotension 4) Uncorrectable coagulopathy Anatomical Exclusion Criteria Patients must be excluded from the study if any of the following conditions are true: 1. Inadequate femoral/iliac access compatible with the required delivery systems; 2. Does not have a non-aneurysmal aortic segment proximal to the aneurysm with: a. A length of at least 4 mm, i.e. at least 4 mm circumferential wall contact around the limits of scallop b. A diameter measured outer wall to outer wall of no greater than 31mm and no less than 21 mm; c. An angle less than 60 degrees relative to the centerline of the aneurysm; d. An angle less than 45 degrees relative to the supraceliac aorta. 3. Does not have visceral vessel anatomy compatible with Zenith® p-Branch™, specifically: a. Renal vessel origins as measured relative to the superior mesenteric artery (SMA) compatible with the renal fenestration, i.e. Both renal vessel origins within 7.5mm of the corresponding renal fenestrations; b. Celiac vessel origin as measured relative to the superior mesenteric artery (SMA) compatible with the celiac scallop. 4. A proximal seal site with unsuitable thrombus/atheroma 5. Does not have iliac artery fixation sites and anatomy consistent with: 1. Common iliac artery fixation site diameter, measured outer wall to outer wall on a sectional image (CT) \<8.0 mm (prior to deployment) 2. Iliac artery diameter, measured outer wall to outer wall on a sectional image (CT) \>21 mm at distal fixation site 3. Iliac artery distal fixation site \<10 mm in length 4. Inability to preserve at least one hypogastric artery \- Cohort 2 (ascending/aortic arch) Inclusion Criteria: General Inclusion Criteria: 1. Treatment not possible with a currently available non-modified approved device 2. Patient accepts to and is able to comply with lifetime follow-up 3. Patient accepts to and is able to provide informed consent prior to enrollment 4. No stroke with significant residual deficit or myocardial infarction within the last 12 months 5. No significant carotid bifurcation disease (\> 70% stenosis by NASCET criteria) 6. Absence of systemic or local infection that may increase the risk of endovascular graft infection 7. Patient determined to be a high-risk profile for open surgical repair considering any of the following items: 1. Anatomy: previous sternotomy or left-sided thoracotomy (if the proposed open repair would require dissection of the thoracic aorta), previous aortic surgery, large aneurysm abutting the sternum with risk of disruption during sternotomy, prior cervical or chest irradiation. 2. Physiology: ASA Category ≥ III, age \>70 years, previous myocardial infarction, coronary artery disease, or coronary artery stent, coronary stress test with a reversible perfusion defect, COPD, congestive heart failure Vascular Inclusion Criteria: 1. Aortic Aneurysm Diameter: Ascending and/or Arch aneurysm with or without aortic or aortoiliac aneurysm with orthogonal aortic diameter greater than two times the normal aortic diameter 2. Rapid aortic enlargement (≥ 5 mm in 1 year) 3. Presence of a saccular aneurysm at risk for rupture based on the investigators evaluation 4. Clinical indication for aneurysm repair based on symptoms 5. Concomitant thoracoabdominal and aortic arch aneurysm meeting one of the above-mentioned criteria. Anatomic Inclusion Criteria: 1\) There is enough space for the device to be deployed distal to coronary arteries and any coronary artery bypass grafts that are considered patent and necessary for proper cardiac perfusion 2) Ascending aortic length \>50 mm (greater curve distance from sinotubular junction to proximal aspect of the innominate artery) 3) Sealing zone in the ascending aorta \>40 mm in length and \<38 mm in diameter for native aorta (\<42 mm if surgical graft replacement in place) 4) Sealing zone in the great vessels of \>20 mm in length * Diameter of innominate artery used for sealing \< 20 mm * Diameter of CCA or subclavian artery used for sealing \< 16mm 5. Distal aortic fixation zone: Native aorta or surgical graft (endovascular device or Dacron graft) , diameter: 20-42mm, distal neck length ≥20mm 6) Access for device delivery to accommodate 22F or 24F sheath depending on device design. 7\) Sealing zone in the great vessels of ≥ 20 mm in length * Diameter of innominate artery used for sealing between 8 and 20 mm * Diameter of CCA or subclavian artery used for sealing between 6 and 16 mm. Extra inclusion criteria - special situations: * Aortic dissection: 1. A true lumen size large enough for device deployment and to gain access into the target branches 2. A sealing zone in the target aorta (or surgical graft) that is proximal to the primary dissection, so that the graft would seal off the dissection lumen 3. A sealing zone in the target supra-aortic trunk vessels that is distal to the dissection or surgically created 4. Access into the true lumen from the groin and to at least one supra-aortic trunk vessel * If more distal disease is observed in the aorta 1. The repair might be coupled with a thoracoabdominal branched device 2. Iliac anatomy large enough to allow the delivery of the arch branch device which is loaded within a 20F-24F sheath. Iliac conduits may be set in place if necessary. Exclusion Criteria: General exclusion criteria: 1. Life expectancy less than 2 years 2. Less than 18 years of age 3. Women must not be pregnant or breastfeeding 4. Active malignancy with life expectancy less than 2 years 5. Presence of mycotic aneurysm, systemic or local infection in access sites that may increase the risk of endovascular graft infection 6. Untreatable coagulopathy 7. Coronaropathy / Unstable angina 8. Anaphylactic reaction to contrast that cannot be adequately pre-medicated 9. Cultural objection to receipt of blood or blood products 10. Allergy or sensitivity to the endografts material (stainless steel, polyester, polypropylene, solder (tin, silver), gold, or nitinol) 11. Leaking or ruptured aneurysm associated with hypotension 12. Participation in another investigational clinical or device trial, except for participation in another investigational endovascular stent-graft protocol, percutaneous aortic valve protocol, or concomitant clinical trials designed to evaluate medical therapy strategies to reduce perioperative risk during fenestrated-branched endovascular repair 13. Prior open surgical or interventional procedure within 30 days of the anticipated date of the fenestrated-branched procedure, with the exception of planned procedures to provide access for repair (e.g. staged iliac conduit, cervical debranching) or to facilitate the procedure. Anatomic Exclusion Criteria for the Cook Ascending/Arch graft 1. Significant occlusive disease, tortuosity, or calcification that would prevent endovascular access. 2. Iliac artery diameter, measured inner wall to inner wall on a sectional image (CT) \<7.0 mm at any point along access length (prior to deployment). Inability to perform a temporary or permanent open surgical or endovascular iliac conduit for patients with inadequate femoral/iliac access. 3. Proximal seal length \< 40 mm 4. Proximal seal site with a circumferential thrombus/atheroma/calcium \-

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • UNC Heart and Vascular

    Chapel Hill, North Carolina, 27599, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.