Abstract
Introduction. Severe pathology of neo-aortic root and neo-aortic valve late after arterial switch operation
(ASO) is a rare observation. Objective: our experience and results of correction of pathology neo-aortic root
in the late postoperative periods after ASO.
Material and methods. During 2010 and 2012, 4 patients underwent correction of severe aortic insufficiency
late after ASO (simple transposition of the great arteries in 2, and Taussig—Bing in 2 patients). Mean age was
4.0 month (from 7 days to 10 month) at the ASO and 11.7 + 2.3 years (from 8.5 to 14 years) at the moment
correction neo-aortic valve pathology. Mean interval between the ASO and intervention on the neo-aortic
valve was in 11.3 + 2.2 (8.3 — 13.3 years). The replacement of neo-aortic valve was done in all patients. The
mean size of the implanted mechanical prosthesis was 21.2+2.4 (18 to 23).
Results. The main reason for neo-aortic valve insufficiency was dilated root and fibrous ring (25—27 mm) in
3 patients, and dilatation of neo-aortic root combined with deformation and hypoplasia of the valve leaflets
in 1 patient. It was no death. The function of the aortic prosthesis was satisfactory in all patients at discharge.
We observed decrease LV EDD (from 5.2 + 0.4 to 4.5 cm + 0.3 cm), reduction of LV EDV index (from
104.1+4.7 to 88.4+4.1 ml/m2) and the increase of LV EF (from 58+6 to 63.8 + 4.7%) in all cases.
Conclusion. The increased number of patients survived after ASO and prolonged period after surgery may be
the reason for more frequent neo-aortic valve insufficiency incidence. Low hospital mortality and low incidence
of postoperative complications associated with correction of this pathology.
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