Composite aortic root replacement with direct coronary artery implantation

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Aortic Surgery

Background:

• Aneurysms of the ascending aorta with aortic valve regurgitation are treated with composite aortic root replacement.
• Controversy exists regarding optimal surgical techniques for this procedure.
• The described technique involves aneurysm excision, composite valve graft implantation, direct coronary artery reattachment, and distal anastomosis.

Purpose of the Study:

• To evaluate the effectiveness and durability of composite aortic root replacement with direct coronary implantation.
• To assess outcomes in patients with various aortic pathologies, including elective and emergency cases.

Main Methods:

• A retrospective review of 110 consecutive patients undergoing composite aortic root replacement between 1979 and 1995.
• Collection of complete follow-up data to analyze survival, reoperation rates, and complications.

Main Results:

• Hospital mortality was 7.3%, with predictors including postoperative renal failure and acute dissection.
• Actuarial survival was 70% at 10 years. Predictors of mortality included specific valve types, preoperative stroke, reoperation, and coronary artery bypass grafting.
• Late reoperation was required in only 3 patients (for valve dysfunction), with 10-year freedom from aortic root reoperation at 97.3%. No anastomotic aneurysms were observed.

Conclusions:

• Composite aortic root replacement with direct coronary implantation is a safe and effective treatment for ascending aorta aneurysms.
• The technique demonstrates durability and good long-term outcomes across diverse patient populations and clinical scenarios.
• This approach is suitable for both elective and emergency surgical interventions.