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Aortic valve preservation in acute type A dissection: is it sound?
L K von Segesser1, E Lorenzetti, M Lachat
1Clinic for Cardiovascular Surgery, University Hospital, Zurich, Switzerland.
The Journal of Thoracic and Cardiovascular Surgery
|February 1, 1996
Summary
Preserving or repairing the aortic valve in acute Stanford type A dissection is safe and effective. This approach leads to excellent long-term outcomes, similar to valve replacement, making it a recommended option for most patients.
Area of Science:
- Cardiovascular Surgery
- Thoracic Surgery
- Aortic Surgery
Background:
- Acute Stanford type A aortic dissection is a life-threatening condition requiring prompt surgical intervention.
- The management of the aortic valve in these patients remains a critical aspect of surgical decision-making.
- Optimal surgical strategy aims to improve survival and reduce long-term complications.
Purpose of the Study:
- To evaluate the long-term validity and outcomes of aortic valve preservation or repair in patients with acute Stanford type A aortic dissection.
- To compare the results of aortic valve sparing techniques with aortic valve replacement.
- To assess the incidence of valve-related complications and reoperations.
Main Methods:
- Analysis of 200 consecutive patients undergoing surgery for acute Stanford type A aortic dissection.
- Surgical strategies included aortic valve preservation/repair, aortic root replacement with composite graft, and aortic valve replacement.
- Echocardiography was primarily used for surgical indication to minimize delay.
- Long-term follow-up (656 patient-years) included actuarial survival and freedom from reoperation analyses.
Main Results:
- Aortic valve was preserved or repaired in 56% of patients.
- Overall survival at 10 years was 48.5%.
- Freedom from reoperation for valve failure at 10 years was 95.1%.
- No significant differences in valve-related complications (deterioration, thrombosis, thromboembolism, hemorrhage, endocarditis) were observed among preserved, repaired, mechanical, and biologic valves.
- Valve-related reoperations were rare within 5 years.
Conclusions:
- Aortic valve preservation or repair is a valid and recommended surgical option for the majority of patients with acute Stanford type A aortic dissection.
- These valve-sparing techniques achieve outcomes comparable to valve replacement, with low rates of reoperation and complications.
- Prompt surgical decision-making, guided by echocardiography, is crucial for managing acute aortic dissections.