[Reconstructive surgery of the aortic root]

Area of Science:

• Cardiovascular Surgery
• Aortic Valve Repair
• Aortic Root Reconstruction

Background:

• Traditional proximal aortic disease treatment involves composite valve-aorta replacement.
• This method carries disadvantages associated with mechanical heart valves.
• Aortic root reconstructive procedures offer an alternative for aortic dilatation and valve regurgitation.

Purpose of the Study:

• To evaluate the outcomes of valve-sparing aortic root replacement.
• To compare reconstructive techniques (remodeling vs. reimplantation) with traditional composite replacement.
• To assess the hemodynamic performance and long-term efficacy of reconstructed aortic valves.

Main Methods:

• Retrospective analysis of 84 patients undergoing valve-sparing aortic root surgery between 10/95 and 09/99.
• Procedures included root remodeling (n=68) and aortic valve reimplantation (n=16).
• Comparison of operative mortality, valve function, reoperation rates, and hemodynamic performance with composite valve-aorta replacement.

Main Results:

• Valve-sparing surgery showed comparable or lower operative mortality than composite replacement, including in emergency cases.
• Excellent initial valve function was achieved, with high freedom from significant regurgitation (98% remodeling, 92% reimplantation).
• Two-year freedom from reoperation was high (96% remodeling, 100% reimplantation), and reconstructed valves demonstrated near-physiologic hemodynamic function.

Conclusions:

• Valve-sparing aortic root reconstruction effectively restores aortic valve function and avoids mechanical valve complications.
• Both root remodeling and valve reimplantation are safe and effective, with excellent long-term results.
• Reconstructive procedures offer a near-physiologic hemodynamic alternative to composite replacement for proximal aortic disease.