Progress in endovascular management of type A dissection.

Area of Science:

• Cardiovascular Surgery
• Endovascular Interventions
• Aortic Diseases

Background:

• Proximal acute aortic dissection (type A) carries a high mortality and significant surgical rejection rate.
• Thoracic endovascular stent grafting has transformed type B dissection treatment.
• Current options for type A dissection are limited, with high peri-operative risks.

Purpose of the Study:

• To explore the potential of endovascular techniques to supplement or provide alternatives to conventional surgery for acute type A aortic dissection.
• To address the challenges of endovascular treatment in the ascending aorta.
• To evaluate endovascular solutions for patients with type A dissection who are poor candidates for open surgery.

Main Methods:

• Review of current endovascular approaches for aortic dissection.
• Discussion of challenges specific to thoracic stent grafting in the ascending aorta.
• Exploration of novel, specifically designed grafts for type A dissection under trial.

Main Results:

• Endovascular therapy may reduce perioperative morbidity by avoiding sternotomy and cardiopulmonary bypass.
• Specialized grafts for type A dissection are under development and compassionate use.
• Existing off-label use of aortic cuffs and stents has been explored.

Conclusions:

• Endovascular solutions show promise for improving outcomes in acute type A aortic dissection.
• These less invasive techniques may benefit patients declined for open surgery.
• Future research and development are crucial for integrating endovascular approaches into type A dissection management.