Frozen elephant trunk surgery in acute aortic dissection

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Vascular Surgery

Background:

• Acute aortic dissection is a life-threatening condition requiring immediate surgical intervention.
• A significant portion of patients surviving surgery have residual dissected aorta, increasing risks of future complications.
• The frozen elephant trunk (FET) procedure is an advanced technique aiming to address these residual risks.

Purpose of the Study:

• To evaluate the efficacy and safety of the frozen elephant trunk (FET) procedure in managing acute aortic dissection.
• To assess the impact of FET on thoracic aortic remodeling and long-term outcomes.
• To identify the potential benefits and limitations of FET in acute aortic dissection.

Main Methods:

• The study reviews existing literature on the frozen elephant trunk (FET) procedure for acute aortic dissection.
• FET involves simultaneous aortic arch replacement and antegrade stenting of the descending thoracic aorta (DTA).
• The procedure aims to cover secondary entry tears and obliterate the false lumen in the proximal DTA.

Main Results:

• Reported in-hospital mortality, stroke, and spinal cord injury rates for FET are 10.0%, 4.8%, and 4.3%, respectively.
• Long-term data suggest that approximately 90% of patients experience aortic remodeling, with partial or complete false lumen thrombosis.
• The FET technique shows potential for significant aortic remodeling in acute aortic dissection cases.

Conclusions:

• The frozen elephant trunk (FET) technique presents a promising option for patients with acute aortic dissection.
• While promising, robust long-term data are necessary to fully validate the benefits of FET.
• Careful patient selection remains critical for optimizing outcomes with the FET procedure.