Aortic root replacement with pulmonary autograft in children

Area of Science:

• Cardiovascular Surgery
• Pediatric Cardiology
• Thoracic Surgery

Background:

• Aortic valve disease in children necessitates surgical intervention.
• Autologous pulmonary root (artery) transplantation is a viable option for aortic root replacement.
• Long-term outcomes and contraindications require further investigation.

Purpose of the Study:

• To evaluate the safety and efficacy of aortic root replacement using the autologous pulmonary root in pediatric patients.
• To assess long-term outcomes, including survival, event-free survival, and autograft function.
• To identify potential contraindications and risk factors for adverse events.

Main Methods:

• Retrospective analysis of 14 pediatric patients (3 months to 16 years) undergoing aortic root replacement with pulmonary autograft.
• Follow-up period of 4 years, with cumulative data of 25.2 patient-years.
• Echocardiographic assessment for autograft growth and structural integrity.

Main Results:

• No early mortality; one late mortality (7.1%) due to congestive heart failure secondary to autograft failure in a patient with juvenile rheumatoid arthritis.
• Event-free survival at 4 years was 78.6%.
• Echocardiography suggested autograft growth in 8 patients; no signs of primary structural degeneration or bacterial endocarditis.

Conclusions:

• Aortic root replacement with the pulmonary autograft is a safe procedure with low mortality and morbidity in children with aortic valve disease.
• Contraindicated in patients with juvenile rheumatoid arthritis due to risk of rheumatic disease recurrence.
• Pulmonary autograft shows potential for growth and is a suitable option for aortic valve replacement in children.