From aortic cusp extension to valve replacement with stentless pericardium

Area of Science:

• Cardiovascular Surgery
• Biomaterials Science
• Clinical Outcomes Research

Background:

• Aortic valve reconstruction using pericardium is an alternative to prosthetic valves.
• Assessing long-term outcomes of pericardial aortic valve reconstruction is crucial.

Purpose of the Study:

• To evaluate the efficacy and safety of glutaraldehyde-treated pericardium for aortic valve reconstruction.
• To compare two different pericardial reconstruction techniques.

Main Methods:

• Retrospective analysis of 82 patients undergoing aortic valve reconstruction with glutaraldehyde-treated pericardium between 1988 and 1994.
• Two techniques were used: single-strip bovine pericardium (n=27) and total autologous pericardium reconstruction (n=55).
• Echocardiographic follow-up and clinical outcomes were assessed.

Main Results:

• One in-hospital and three late deaths occurred. No anticoagulation was required, and no embolic events were detected.
• Nine patients required reoperation due to mitral valve repair failure (4) or aortic regurgitation (5).
• Echocardiography showed low gradients, valve competence, and no progressive deterioration. No significant difference was found between the two techniques.

Conclusions:

• Glutaraldehyde-treated pericardium is a viable option for aortic valve reconstruction, offering good short- to mid-term results without anticoagulation.
• Both techniques demonstrated comparable outcomes, suggesting flexibility in surgical approach.
• Further research may explore long-term durability and specific indications for each technique.