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Aortico-left ventricular tunnel: late follow-up
Insights
Surgical repair of aortico-left ventricular tunnel is effective, but 50% of patients develop progressive aortic regurgitation, often requiring aortic valve replacement (AVR). Early intervention is crucial for preventing heart failure and further aortic valve damage.
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.
Abstract:
Since 1970, 6 patients have undergone repair of aortico-left ventricular tunnel. Four (67%) had repair in childhood. The technique of closure was by direct suture (5 patients) or patch closure (1 patient). Associated anomalies were seen in 5 patients (83%); absent right coronary ostium (1), commissural fusion (stenosis) (2), valvular regurgitation (3), leaflet defects (2), and healed endocarditis (1). All patients survived operation. At early postoperative review, 67% had mild aortic regurgitation regardless of the technique of surgical repair. Late follow-up revealed that 3 patients (50%) underwent aortic valve replacement (AVR) for progressive aortic regurgitation at a mean of 10 years following initial operation. A review of the literature and our results lead us to conclude that progressive aortic regurgitation is common; it is due to associated valve abnormalities and changes in the valve mechanism secondary to the aortico-left ventricular tunnel. Long-term clinical follow-up is necessary, since 50% of patients will require AVR eventually. Early operation is indicated not only to prevent heart failure but also to prevent progression of damage to the aortic valve.