[Surgery for type A aortic dissection: long-term results and risk factor analysis].

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Aortic Disease Management

Context:

• Type A aortic dissection is a life-threatening condition requiring prompt surgical intervention.
• Identifying preoperative risk factors is crucial for optimizing surgical outcomes and patient survival.
• Surgical techniques for ascending aorta, arch, and aortic root replacement have evolved.

Purpose:

• To identify risk factors associated with operative mortality and long-term survival after surgical repair of type A aortic dissection.
• To evaluate the impact of different surgical approaches and intraoperative management strategies on patient outcomes.
• To determine predictors of late death and disease progression requiring reoperation.

Summary:

• This study analyzed 100 patients undergoing surgical repair for type A aortic dissection, evaluating operative mortality and long-term survival.
• Independent risk factors for operative mortality included acute/chronic renal dysfunction, advanced age, and prolonged bypass time.
• Antegrade cerebral perfusion with moderate hypothermia improved outcomes during arch replacement. Dilated aortic root diameter predicted reoperation, significantly reducing long-term survival.

Impact:

• Findings emphasize the importance of aggressive management of renal dysfunction preoperatively.
• A dilated aortic root diameter at presentation should prompt consideration for aortic root replacement during the initial operation to prevent reoperation.
• Surgical repair of acute aortic dissection provides satisfactory long-term results, but careful patient selection and risk factor management are essential for optimal outcomes.