Isolated aortic valve replacement. A six-year follow-up.

Area of Science:

• Cardiac Surgery
• Biomaterials Science
• Clinical Outcomes Research

Background:

• Aortic valve replacement is a critical procedure for managing aortic valve disease.
• Tissue valves (homografts, autografts) and prosthetic valves are common options, each with distinct characteristics.
• Long-term outcomes and complication rates require continuous evaluation.

Purpose of the Study:

• To retrospectively analyze early and late mortality and valve failures after aortic valve replacement.
• To compare outcomes between aortic valve homografts, pulmonary valve autografts, and Starr-Edwards prosthetic valves.
• To investigate the prognostic significance of diastolic murmurs in patients with tissue valves.

Main Methods:

• Retrospective analysis of 259 patients undergoing aortic valve replacement.
• Categorization of patients into three groups: aortic valve homografts (100), pulmonary valve autografts (100), and Starr-Edwards prosthetic valves (59).
• Follow-up for up to six years to assess mortality, valve failure, and complications.

Main Results:

• Tissue valve groups (homografts and autografts) demonstrated lower early mortality than the prosthetic valve group.
• Long-term mortality and complication rates were lower in the homograft group.
• The appearance of a diastolic murmur in tissue valve recipients was associated with a significant negative prognostic role.

Conclusions:

• Aortic valve homografts and pulmonary valve autografts appear to offer survival advantages over mechanical prostheses in the early and long term.
• Surgical experience may further improve outcomes in tissue valve replacement.
• Diastolic murmurs are important indicators of adverse events in patients with tissue aortic valves.