Controversies in Chronic Aortic Dissection

Yanqing Zhao1,2, Shinichi Fukuhara3, Minhaj S Khaja1,3

  • 1Division of Vascular and Interventional Radiology, Department of Radiology, University of Michigan Health, Ann Arbor, Michigan.

Insights

Thoracic endovascular aortic repair (TEVAR) is a viable option for chronic type B aortic dissection (cTBAD), especially for high-risk patients. Advances in endovascular techniques improve outcomes, but further research is needed for long-term validation.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Medicine
  • Interventional Cardiology

Background:

  • Chronic type B aortic dissection (cTBAD) poses risks of aneurysm and rupture, traditionally treated with open surgery.
  • Endovascular therapies, specifically thoracic endovascular aortic repair (TEVAR), are increasingly considered for cTBAD.
  • Challenges for TEVAR in cTBAD include dissection septum thickness, inadequate landing zones, and persistent false lumen flow.

Purpose of the Study:

  • To review the current role and emerging endovascular techniques for treating cTBAD.
  • To discuss technical considerations and outcomes of catheter-based interventions for cTBAD.
  • To highlight the growing evidence supporting TEVAR in high-risk cTBAD patients.

Main Methods:

  • Review of current literature on endovascular treatment for cTBAD.
  • Analysis of advancements in TEVAR techniques, including false lumen obliteration and landing zone strategies.
  • Discussion of technical challenges and clinical outcomes associated with TEVAR in cTBAD.

Main Results:

  • TEVAR is increasingly recognized as a feasible treatment option for cTBAD.
  • New endovascular techniques have improved technical success rates and clinical outcomes.
  • Evidence suggests TEVAR is particularly beneficial for high-risk patients unsuitable for open surgery.

Conclusions:

  • TEVAR is a promising alternative to open surgery for select cTBAD patients.
  • Ongoing research and validation of advanced endovascular techniques are crucial for long-term efficacy.
  • Catheter-based approaches offer evolving solutions for managing cTBAD complications.

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