Contemporary analysis of descending thoracic and thoracoabdominal aneurysm repair: a comparison of endovascular and open techniques.
Roy K Greenberg, Qingsheng Lu, Eric E Roselli...
https://pubmed.ncbi.nlm.nih.gov/18678769/Actively Recruiting
Led by Yale University · Updated on 2026-04-27
80
Participants Needed
2
Research Sites
208 weeks
Total Duration
Researchers are evaluating the safety and effectiveness of a physician-modified, fenestrated and branched aortic endoprosthesis for treating thoracoabdominal aortic aneurysms TAAAs. This study compares the use of a physician-modified fenestrated Cook Zenith Alpha Thoracic Endovascular Graft to previously published results of open surgical replacement of the aneurysmal aorta. The purpose is to demonstrate both safety and effectiveness in adult patients who meet traditional size criteria for surgical repair. The study includes two groups one using the physician-modified fenestrated Cook Zenith Alpha Thoracic Endovascular Graft for asymptomatic, non-ruptured TAAAs meeting traditional size criteria, and an expanded access group that also includes thoracic or abdominal aortic aneurysms with similar criteria. The device is used endovascularly to treat aneurysms of any Crawford extent I-V. Patients are followed for five years after the procedure. Participants will undergo multiple assessments including survival rates, major adverse events, treatment and technical success at various time points up to five years. Monitoring includes evaluation of complications such as aneurysm rupture, access site issues, neurological events, and conversion to open repair. The study collects data on treatment outcomes and safety, with follow-up visits scheduled for up to five years post-procedure.
CONDITIONS
Physician-Modified Fenestrated and Branched Aortic Endografting for TAAA
D
David P. Kuwayama, M.D., MPA
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Yale University
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Physician-Modified Fenestrated Endovascular Repair | Open Surgical Repair |
|---|---|---|
| What is it? | A physician-customized fenestrated endovascular graft, specifically the Cook Zenith Alpha Thoracic Endovascular Graft, used to repair thoracoabdominal aortic aneurysms in patients at high surgical risk when commercial grafts are unsuitable. | Open surgical repair involves direct replacement of the diseased aortic segment with a synthetic graft through major surgery, performed when endovascular approaches are not feasible or contraindicated. |
| Role in the trial | Investigational intervention under study for thoracoabdominal aortic aneurysm repair among patients who cannot receive standard endovascular devices. | Not included in the trial; shown as current-care context for eligible patients. |
| Primary use | Repair thoracoabdominal aortic aneurysms less invasively in high-risk patients who are not candidates for commercial endovascular grafts. | Definitive repair of thoracoabdominal aortic aneurysms by direct surgical replacement, suitable for patients without endovascular options. |
| How is it given or performed? | The endovascular graft is customized by the physician and delivered through minimally invasive vascular access under imaging guidance, targeting visceral vessels. | Open surgical repair requires a large incision, direct aortic exposure, and replacement of the aneurysmal section with a synthetic graft, typically involving prolonged recovery and substantial operative risk. |
| Evidence status | Clinical evidence for physician-modified fenestrated endografts remains limited, mainly from case series and registry studies, and ongoing trials aim to clarify safety and outcomes in high-risk patients. | Open surgical repair has extensive published evidence, with long-term outcomes documented in both historical and contemporary studies for thoracoabdominal aneurysm repair. |
| Important limitations | The technique is highly specialized, depends on physician skill and customization, and may have increased procedural complexity. Long-term durability, complication rates, and risk of visceral branch occlusion remain uncertain in absence of large multicenter controlled studies. | Open surgery is invasive with substantial perioperative risk including bleeding, infections, spinal cord ischemia, renal failure, and higher morbidity, particularly in elderly or high-risk patients, although long-term durability is well established. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
You will not qualify if you...
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Day of surgery
Participants receive a physician-modified fenestrated Cook Zenith Alpha Thoracic Endovascular Graft to treat thoracoabdominal aortic aneurysms.
1 surgical procedure
Duration - 5 years
Participants are monitored for safety and effectiveness of the graft with regular assessments.
Visits at 30 days; 6 months; and annually up to 5 years
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NON_RANDOMIZED
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
2
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Lead Sponsor