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  • Title: Anatomic repair for corrected transposition with left ventricular outflow tract obstruction.
    Author: Hoashi T, Kagisaki K, Miyazaki A, Kurosaki K, Shiraishi I, Yagihara T, Ichikawa H.
    Journal: Ann Thorac Surg; 2013 Aug; 96(2):611-20. PubMed ID: 23743063.
    Abstract:
    BACKGROUND: We investigated the long-term outcomes of anatomic repair for congenitally corrected transposition of great arteries (ccTGA) and its variant associated with left ventricular outflow tract obstruction (LVOTO) and ventricular septal defect (VSD). METHODS: From 1987 to 2011, 47 patients (27 with pulmonary atresia and 20 with pulmonary stenosis) with ccTGA and its variant associated with LVOTO and VSD underwent anatomic repair. The mean operative age was 5.5 ± 3.7 years old (range, 1.6 to 21.3). The preoperative right ventricular end-diastolic volume was 133% ± 31% (81 to 222) of their normal size. The atrial switch procedure was Mustard in 31 patients and Senning in 16, with the latter used in all from 2002. RESULTS: The mean follow-up period was 11.6 ± 7.3 years (maximum, 22.7). The VSD was concomitantly enlarged in 4 patients and Damus-Kaye-Stansel (DKS) anastomosis was added in 9 patients with pulmonary stenosis and restrictive VSD. The overall survival rate at 20 years was 70.2% and no mortality has been observed in 21 consecutive patients since 1997. No patient required reoperation for the postoperative systemic ventricular outflow tract obstruction. A surgical heart block developed in 1 patient (2.1%) who underwent concomitant VSD enlargement. None of the patients developed a moderate or greater aortic or neo-aortic regurgitation. CONCLUSIONS: Recent outcomes after anatomic repair for congenitally corrected transposition of great arteries associated with LVOTO and VSD were excellent. For patients with pulmonary stenosis and restrictive VSD, additional DKS anastomosis seems to be an effective approach to avoid postoperative systemic ventricular outflow tract obstruction and surgical heart block.
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