Echocardiography-Derived Left Ventricular Outflow Tract Gradient and Left Ventricular Posterior Wall Thickening Are Associated with Outcomes for Anatomic Repair in Congenitally Corrected Transposition of the Great Arteries.

•The authors assessed imaging techniques in patients with CCTGA.•Echocardiography was an important tool for assessing the morphologic left ventricle before anatomic repair.•Intrinsic or PAB-associated LVOT gradient was a useful measurement of LV preparedness for anatomic repair.•LVPW thickening was also useful in assessing the left ventricle before anatomic repair.