Surgical Outcomes of Anatomical Repair for Congenitally Corrected Transposed Great Arteries

The outcomes of anatomical repair for patients with congenitally corrected transposed great arteries remain unclear and the indications for different procedures are poorly understood.

From January 2005 to February 2016, consecutive corrected transposition patients who underwent anatomical repair at the current institution were enrolled in this retrospective study. Varied types of anatomical repair were individually customised.

A total of 85 patients were included. Fifty-one (51) and 35 patients presented with left ventricular outflow tract obstruction and cardiac malposition, respectively. Thirty-nine (39) patients presented with moderate-to-severe tricuspid regurgitation. Thirty-four (34), 19, and 32 patients underwent Senning arterial switch operations, Senning-Rastelli, and hemi-Mustard-Rastelli-bidirectional Glenn, respectively. Early after repair, there were five in-hospital deaths and nine re-operations. During 4.6 years (range, 0.5-10.3) of follow-up, seven late deaths were documented. Estimated overall survival rate after anatomical repair was 89.3%, 85.0%, and 85.0% at 1 year, 3 years, and 5 years, respectively. Instead of Senning-Rastelli, most (75.0%) early left ventricular dysfunctions were noted in patients who underwent Senning arterial switch procedures. However, all the late left ventricular dysfunctions were found in patients who underwent previous left ventricular retraining. In patients with left ventricular outflow tract obstruction, the hemi-Mustard-Rastelli-bidirectional Glenn shunt provided a lower early mortality (0% vs 15.8%, p = 0.047).

Favourable outcomes can be achieved for anatomical repair of corrected transposition. Left ventricular dysfunction was a significant postoperative issue. Hemi-Mustard-bidirectional Glenn-Rastelli procedure may provide benefits for patients with associated left ventricular outflow tract obstruction and cardiac malposition. Each procedure has its own advantages in varied anatomy.