Limited repair with tear-oriented approach for type A aortic dissection.

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Aortic Disease

Background:

• Acute type A aortic dissection (ATAAD) is a critical condition with significant mortality.
• Reported ATAAD repair mortality varies widely, from 5-8% in specialized centers to 17-18% in international registries.

Purpose of the Study:

• To compare outcomes of limited/tear-oriented versus extended repair for ATAAD.
• To evaluate indications and validity of different surgical approaches for ATAAD.

Main Methods:

• Review of updated outcomes after ATAAD repair.
• Comparison of limited/tear-oriented approach versus extended repair strategies.
• Analysis of distal reoperation rates and outcomes with antegrade stent grafting.

Main Results:

• Extended repair is associated with high operative risk and does not appear to significantly reduce distal reoperation rates (around 10%).
• No data supports antegrade stent grafting to improve outcomes in patients with distal malperfusion.
• The incremental short-term risks of extended repair outweigh potential future benefits for most patients.

Conclusions:

• The tear-oriented approach is recommended for ATAAD repair.
• Extended repair beyond the tear-oriented approach is not advised due to increased risks.
• Current evidence does not support routine use of extended repair or antegrade stenting in ATAAD.