Cone versus conventional repair for Ebstein's anomaly

Area of Science:

• Cardiology
• Cardiac Surgery
• Congenital Heart Disease

Background:

• Ebstein's anomaly is a rare congenital heart condition affecting the tricuspid valve.
• Tricuspid valve dysfunction is a common and significant complication in Ebstein's anomaly.
• Surgical intervention, including repair and replacement, is often necessary to manage severe cases.

Purpose of the Study:

• To compare the efficacy of cone repair versus conventional tricuspid valve repair and replacement in Ebstein's anomaly.
• To evaluate tricuspid valve function and adverse event rates following different surgical approaches.
• To assess the long-term outcomes, including recurrent regurgitation and reoperation, associated with each surgical method.

Main Methods:

• Retrospective analysis of 151 patients who underwent surgery for Ebstein's anomaly between 1985 and 2018.
• Categorization of surgical procedures into cone repair, other repair techniques, and valve replacement.
• Serial echocardiographic examinations to assess tricuspid regurgitation during follow-up.

Main Results:

• Cone repair demonstrated a lower incidence of failed valve repair (5% vs. 20%) and moderate or greater recurrent tricuspid regurgitation at 5 years (8% vs. 32%) compared to other repair techniques.
• Patients undergoing other repair techniques had a 15-year cumulative incidence of 58% for moderate/greater recurrent tricuspid regurgitation, 37% for severe regurgitation, and 31% for reoperation.
• Operative mortality was low at 1.3% (2 patients).

Conclusions:

• Cone repair is associated with a higher success rate and reduced midterm recurrence of tricuspid regurgitation in Ebstein's anomaly.
• Conventional repair methods for Ebstein's anomaly are linked to significant rates of recurrent tricuspid regurgitation and reoperation.
• The findings support cone repair as an effective surgical strategy for managing Ebstein's anomaly.