Complete Transposition of the Great Arteries
Definition
The aorta arises from the right ventricle and the pulmonary artery arises from the left ventricle; also called D-transposition
Associated Anomalies
- Atrial septal defect or patent foramen ovale
- Ventricular septal defect
- Patent ductus arteriosus
- Right-sided aortic arch (11 to 16%)
- Pulmonic stenosis
Cardiac Auscultation
- Systolic murmur at left sternal border
- Diastolic flow murmur at apex
Electrocardiogram
- Right axis deviation
- Right ventricular hypertrophy
Chest X-ray
- Cardiomegaly with oval cardiac configuration
Surgical Treatment
- Mustard repair or Senning repair—atrial blood is directed so that it exits the correct great vessel
- Jatene repair is now favored - the great vessels are switched
M-Mode
- Limited
2-D
- Parasternal long-axis view makes the diagnosis by demonstrating the pulmonary artery is seen ascending and then abruptly bending posteriorly in this view. The bifurcation should be identified in this view
- Parasternal short-axis view demonstrates both great vessels