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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
Endoluminal stent-graft stabilization for thoracic aortic dissection
Daniel R Nathanson1, Julio A Rodriguez-Lopez, Venkatesh G Ramaiah
1Department of Cardiovascular and Endovascular Surgery, Arizona Heart Institute and Arizona Heart Hospital, Phoenix, Arizona, USA.
Insights
Thoracic endografting for type B aortic dissection shows promising early results. This stent-graft repair offers acceptable morbidity and mortality, potentially reducing aortic expansion and rupture risks.
Area of Science:
- Vascular Surgery
- Cardiovascular Research
- Medical Device Technology
Background:
- Type B aortic dissection presents significant challenges in thoracic aorta management.
- Traditional surgical repair carries substantial risks.
- Endovascular solutions are increasingly explored for complex aortic pathologies.
Purpose of the Study:
- To evaluate the safety and efficacy of thoracic endografting for type B aortic dissection.
- To assess the performance of the TAG Endoprosthesis in this patient cohort.
- To review early clinical outcomes and complications.
Main Methods:
- Retrospective analysis of prospectively collected data (March 2000-July 2004).
- Investigational device exemption protocol for the TAG thoracic endograft.
- 40 patients with type B aortic dissection treated with thoracic endografts.
Main Results:
- Technical success rate of 95% achieved.
- Low perioperative mortality (2.5%) and manageable endoleaks.
- Postoperative complications occurred in 38% of patients, including one case of paraplegia.
- One-year survival rate was 85%.
- Significant reduction in size of aneurysmal segments observed in 8 patients.
Conclusions:
- Thoracic endografting is a viable option for type B aortic dissection with acceptable outcomes.
- The TAG Endoprosthesis demonstrates potential in managing thoracic aortic pathologies.
- Stent-graft repair may reduce the incidence of thoracic aortic expansion and rupture.
Purpose:
To review our experience with thoracic endografting for type B aortic dissection using the TAG Endoprosthesis.
Methods:
A retrospective analysis was performed of data collected prospectively from March 2000 to July 2004 under an investigational device exemption protocol for the TAG thoracic endograft. In this time period, 40 patients (29 women; mean age 67 years, range 39-91) were treated with this endograft for type B aortic dissection.
Results:
Technical success was 95%. There was 1 (2.5%) perioperative death, and 1 (3%) endoleak was treated with an additional graft on postoperative day 2. Fifteen (38%) patients experienced postoperative complications, mainly renal or pulmonary, and 1 (3%) patient developed postoperative paraplegia that did not resolve. The 1-year survival was 85%. Follow-up computed tomography was available for 31 patients with an average 15-month follow-up. There was no significant change in size of the thoracic aorta in 22 patients; 8 aneurysmal segments were significantly reduced in size and 1 thoracic aortic aneurysm expanded. No thoracic aortic ruptures were seen in this series.
Conclusions:
These early results indicate type B thoracic aortic dissections can be treated with acceptable morbidity and mortality using endografts. Stent-graft repair of the thoracic aorta may decrease the incidence of thoracic aortic expansion and rupture.
