Follow-up of arterial switch operation

Area of Science:

• Pediatric Cardiac Surgery
• Congenital Heart Disease
• Cardiovascular Outcomes

Background:

• Transposition of the great arteries (TGA) and Taussig-Bing anomaly are complex congenital heart defects.
• The arterial switch operation (ASO) is a primary surgical repair for these conditions.
• Long-term outcomes following ASO require continued evaluation.

Purpose of the Study:

• To report the surgical experience and long-term outcomes of the arterial switch operation at Leiden University Hospital.
• To assess functional status, rhythm, and potential complications in patients undergoing ASO for TGA and Taussig-Bing anomaly.

Main Methods:

• Retrospective review of patients undergoing arterial switch operation.
• Analysis of follow-up data including functional class, heart rhythm, and specific complications.
• Longest follow-up duration of 13 years and 9 months.

Main Results:

• The arterial switch operation demonstrated good outcomes in surviving patients.
• Nearly all surviving patients achieved functional class I and maintained sinus rhythm.
• Supravalvular pulmonary artery stenosis was observed in some patients, generally mild and non-progressive.
• Aortic valve insufficiency was less frequent and not a significant concern during the follow-up period.

Conclusions:

• The arterial switch operation is an effective surgical treatment for transposition of the great arteries and Taussig-Bing anomaly.
• Long-term follow-up indicates sustained good functional status and sinus rhythm post-ASO.
• While mild pulmonary artery stenosis and aortic insufficiency can occur, they appear to be manageable complications.