Aortico-left ventricular tunnel: late follow-up

Area of Science:

• Cardiovascular Surgery
• Congenital Heart Disease
• Pediatric Cardiology

Background:

• Aortico-left ventricular tunnel (ALVT) is a rare congenital heart defect.
• Surgical repair is the primary treatment for ALVT.
• Long-term outcomes, particularly concerning aortic valve function, require further investigation.

Purpose of the Study:

• To evaluate the long-term outcomes of surgical repair for aortico-left ventricular tunnel.
• To identify the incidence and risk factors for progressive aortic regurgitation after ALVT repair.
• To emphasize the importance of long-term follow-up and early surgical intervention.

Main Methods:

• Retrospective review of 6 patients who underwent ALVT repair between 1970 and present.
• Analysis of surgical techniques (direct suture vs. patch closure).
• Assessment of associated cardiac anomalies and postoperative complications, including aortic regurgitation.

Main Results:

• All 6 patients survived the initial surgery.
• 50% of patients (3/6) required aortic valve replacement (AVR) due to progressive aortic regurgitation at a mean of 10 years post-repair.
• Mild aortic regurgitation was observed in 67% of patients early postoperatively, irrespective of repair technique.

Conclusions:

• Progressive aortic regurgitation is a common long-term complication following ALVT repair.
• Associated cardiac anomalies and intrinsic valve damage contribute to aortic regurgitation.
• Lifelong clinical follow-up is essential, as 50% of patients eventually need AVR; early surgical correction is recommended to prevent heart failure and preserve aortic valve function.