Management of aortic insufficiency in chronic aortic dissection

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Cardiac Valve Surgery

Background:

• Chronic aortic dissection and insufficiency pose significant surgical challenges.
• Aortic valve management is critical in these complex cases.
• Outcomes of valve preservation versus replacement require detailed analysis.

Purpose of the Study:

• To compare the outcomes of aortic valve preservation versus valve replacement in patients with chronic aortic dissection and insufficiency.
• To evaluate the efficacy and safety of aortic valve plastic procedures in select patients.

Main Methods:

• Retrospective analysis of 44 patients undergoing operation for chronic aortic dissection and insufficiency from 1980-1988.
• Comparison of patient groups based on aortic valve management: preservation (plastic procedure) versus replacement.
• Assessment of hospital mortality, late mortality, functional status, and reoperation rates.

Main Results:

• Aortic valve was preserved in 48% of patients.
• Hospital mortality was 11% (low-output syndrome, bleeding, neurological complications).
• Late mortality was 5%; 78% of survivors were in functional class I at follow-up (mean 18 months).
• Valve preservation showed higher, though not statistically significant, survival rates compared to valve replacement.
• Reoperations were required for prosthetic valve dysfunction and one case of redissection after valve repair.

Conclusions:

• Aortic valve preservation is a viable option in select patients with chronic aortic dissection and insufficiency, offering good functional outcomes.
• While not statistically significant, valve preservation demonstrated a trend towards improved survival.
• Careful patient selection and surgical technique are crucial for successful valve preservation and minimizing complications.