Surgical results in acute type A aortic dissection.

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Aortic Disease

Background:

• Acute type A aortic dissection carries high mortality, with international registries reporting 58% for non-surgical and 26% for surgical management.
• Hospital mortality rates exceeding 20% are common in Western countries, influenced by factors like cardiac tamponade and organ malperfusion.
• Japanese surgical results for aortic dissection have shown consistent improvement, with in-hospital mortality decreasing below 20% since 1999.

Purpose of the Study:

• To evaluate the outcomes of surgical management for acute type A aortic dissection.
• To highlight the impact of innovative surgical technologies on reducing mortality and morbidity.
• To present the experience and results of a dedicated aortic program.

Main Methods:

• Review of 98 emergency operations for acute type A aortic dissection.
• Analysis of operative and in-hospital mortality in recent series (since 2001).
• Application of advanced techniques including hypothermic circulatory arrest, antegrade cerebral perfusion, GRF glue, branched grafts, and antegrade arterial perfusion.

Main Results:

• Overall operative and in-hospital mortality for the aortic program were 5.1% and 6.1% respectively.
• A recent series (since 2001) demonstrated significantly lower operative and in-hospital mortalities of 2.8% and 3.2%.
• Innovative technologies contributed to improved surgical outcomes, though challenges remain in managing preoperative organ malperfusion.

Conclusions:

• Surgical intervention for acute type A aortic dissection offers significantly better survival rates than non-surgical management.
• Advanced surgical techniques and technologies have markedly improved outcomes in recent years.
• While surgical results have improved, addressing preoperative organ malperfusion remains a critical challenge in reducing mortality and morbidity.