Nonsurgical Repair of the Ascending Aorta: Why Less Is More

Area of Science:

• Cardiovascular Surgery
• Interventional Cardiology
• Medical Device Technology

Background:

• Emerging endovascular techniques for ascending aorta pathology present challenges.
• Stent grafts in the ascending aorta have shown issues like migration and erosion, especially in non-surgical candidates.

Purpose of the Study:

• To compare the safety and efficacy of stent grafts versus focal occluding devices for ascending aorta pathology.
• To evaluate long-term outcomes and complications associated with these endovascular approaches.

Main Methods:

• Analysis of six cases: three treated with ascending aorta stent grafts (34-45mm diameter, 77-100mm length) for chronic dissection.
• Three matched patients treated with focal closure using occluding devices (14-18mm disc diameter) for communicating entry.

Main Results:

• Both methods were technically feasible, but stent grafts led to early/delayed erosion or re-dissection.
• Focal occluding devices achieved complete seal, induced remodeling, and showed long-term survival without impairing aortic root motion.
• Stent grafts caused impeded aortic root motion and presented migration/erosion risks between 12-16 months post-procedure.

Conclusions:

• Focal occluding devices are a safer alternative to ascending aorta stent grafts, avoiding erosion and preserving aortic root function.
• Stent grafts in the ascending aorta carry significant risks of migration and erosion, potentially serving only as a temporary measure.
• Further research with larger datasets is needed to fully understand interventions for ascending aorta pathology.