Systemic venous segments interposition for pulmonary artery to aorta connection

Area of Science:

• Cardiovascular Surgery
• Pediatric Cardiology
• Congenital Heart Disease

Background:

• Pulmonary atresia with ventricular septal defect (PA/VSD) presents significant surgical challenges.
• Reconstruction of diminutive pulmonary arteries requires delicate surgical techniques and suitable graft materials.

Observation:

• Two patients with PA/VSD underwent surgical repair using interposition grafts.
• Systemic veins (azygos and innominate) were utilized to connect diminutive pulmonary arteries to the ascending aorta.

Findings:

• The thin walls of the systemic veins provided an excellent match for the fragile pulmonary arterial tissue.
• Surgical anastomoses remained patent at three and four months post-operation.
• No evidence of aneurysmal dilatation was observed at follow-up.

Implications:

• Interposition of systemic veins offers a viable and effective method for pulmonary artery reconstruction in PA/VSD.
• This technique may improve long-term outcomes for patients with complex congenital heart defects.
• Further studies are warranted to evaluate the durability and broader applicability of this approach.