•Electrocardiogram: An electrocardiogram (ECG) records the electrical activity of the heart through the use of electrodes that are placed on the body. The findings through this diagnostic method are not specific to only TGA. If TGA is present, rightward deviation of the QRS complex and right ventricular hypertrophy or biventricular hypertrophy may be noted. •Chest X-Ray: On chest X-ray (CXR),<unk>  typically shows a cardio-mediastinal silhouette appearing as an "egg on a string ", in which the enlarged heart represents an egg on its side and the narrowed, atrophic thymus of the superior mediastinum represents the string. •Echocardiogram: An echocardiogram is an ultrasound of the heart that accurately assesses the heart’s structure and function, and can show the specific features of TGA, if present. This imaging modality allows for the definitive diagnosis of TGA to be made. •Cardiac catheterization: Catheterization is done if other diagnostic tests do not provide enough information to make a diagnosis, or if a neonate is unstable. During this procedure, a catheter is inserted in the artery or vein in the groin and makes its way up to the heart. Dye is used to visualize the heart’s structures on x-ray. It can also measure the pressures in the heart and lungs.
Transposition of the great vessels
Tetralogy of Fallot  Tetralogy of Fallot  1
Double aortic arch
Levo-Transposition of the great arteries
Dextro-Transposition of the great arteries
Pulmonary atresia
Double outlet right ventricle
Situs ambiguus