Repair of neonatal aortic coarctation

Area of Science:

• Pediatric Cardiac Surgery
• Congenital Heart Defects
• Aortic Coarctation Repair

Background:

• Aortic coarctation is a critical congenital heart defect requiring surgical intervention in neonates.
• Congestive heart failure is the primary presentation in infants with aortic coarctation.
• Surgical outcomes for aortic coarctation vary based on defect complexity and patient comorbidities.

Purpose of the Study:

• To evaluate the outcomes of aortic coarctation repair in infants.
• To assess the efficacy of different surgical techniques, including left subclavian artery flap angioplasty.
• To identify factors associated with hospital mortality and restenosis.

Main Methods:

• Retrospective review of 146 infants under 1 month undergoing aortic coarctation repair (1981-1991).
• Categorization of patients into isolated coarctation, coarctation with ventricular septal defect, and complex cardiac defects.
• Analysis of surgical techniques (left subclavian artery flap angioplasty, end-to-end anastomosis), concomitant procedures (pulmonary artery banding), and clinical outcomes.

Main Results:

• Overall hospital mortality was 11%, significantly associated with pre-existing renal failure.
• Left subclavian artery flap angioplasty was performed in 126 infants, with a 10% incidence of significant restenosis.
• Mean hospital stay for survivors was 13.4 days; 11 patients required reoperation, and 5 were managed with balloon dilatation.

Conclusions:

• Surgical repair of aortic coarctation in neonates carries a significant mortality risk, particularly in those with renal compromise.
• Left subclavian artery flap angioplasty is an effective repair technique but has a notable restenosis rate.
• Long-term management may involve reoperation or balloon angioplasty for restenosis.