Valve repair for aortic insufficiency: surgical classification and techniques

Area of Science:

• Cardiovascular Surgery
• Cardiac Valve Disease
• Thoracic Surgery

Background:

• Aortic insufficiency (AI) management often involves aortic valve replacement (AVR).
• Aortic valve repair (AVR) presents a potential alternative for selected patients, aiming for permanent correction or palliation.
• Repair can facilitate aortic annulus growth in pediatric patients and avoid anticoagulation therapy.

Purpose of the Study:

• To propose a classification system for aortic valve anatomy to guide patient and procedure selection for aortic valve repair.
• To evaluate the five-year experience with aortic valve repair for aortic insufficiency.

Main Methods:

• 44 consecutive patients with aortic incompetence underwent aortic valvuloplasty between September 1989 and February 1995.
• Patients were classified into three types based on echocardiographic anatomy: Type I (annular dilation), Type II (excessive leaflet tissue), and Type III (restricted leaflet motion).
• Specific repair techniques included commissural plication, annuloplasty, leaflet excision/plication, leaflet extension, commissurotomy, and augmentation.

Main Results:

• Postoperative echocardiography showed a significant reduction in aortic incompetence.
• No mortality was observed, and patients improved in NYHA functional class.
• Reoperation was required in 18% of the initial 13 patients, with 7% requiring reoperation after leaflet extension, at 19 months to 3 years post-procedure.

Conclusions:

• Aortic valve repair is a low-risk option with satisfactory intermediate-term results for selected patients with aortic insufficiency.
• Echocardiographic assessment of aortic valve anatomy is crucial for patient and procedure selection.
• A comparative risk-benefit analysis with valve replacement should guide treatment decisions.