Aortic regurgitation after arterial switch operation.

n the early 1980s, Jatene developed the arterial switch peration (ASO), which soon became the preferred surgery or d-loop transposition of the great arteries (TGA). This peration includes translocation of the pulmonary artery and orta above the sinuses, often with a Lecompte maneuver bringing the pulmonary artery anterior to the aorta) and oronary reimplantation into the neo-aortic sinuses. Alhough the complications inherent in the previous atrial witch procedures were avoided, and the left ventricle could emain the systemic ventricle, other post-operative compliations following ASO have been encountered. With inreased surgical experience, the initial problems seen with oronary transfer are now rare. Unusual coronary patterns, nce considered to be a risk factor for survival, have been ound more recently not to affect outcome (1). Supravalvar ulmonary stenosis at the reanastomosis site or branch ulmonary stenosis due to tension has been observed. At hortand longer-term follow-up, neo-aortic root dilation nd neo-aortic regurgitation (AR) are relatively common, nfrequently leading to reoperation.