Overriding Aorta

An overriding aorta is a congenital heart defect where the aorta is positioned directly over a ventricular septal defect, instead of over the left ventricle.

The result is that the aorta receives some blood from the right ventricle, which reduces the amount of oxygen in the blood.

It is one of the four conditions of the Tetralogy of Fallot. The other conditions are pulmonary stenosis, RVH (right ventricular hypertrophy), and VSD (ventricular septal defect.)

Congenital vascular defects / Vascular malformation (Q25–Q28, 747)
Great arteries/
other arteries
  • Patent ductus arteriosus
  • Coarctation of the aorta
  • Interrupted aortic arch
  • Double aortic arch
  • Right-sided aortic arch
  • Overriding aorta
  • Aneurysm of sinus of Valsalva
  • Vascular ring
Pulmonary artery
  • Pulmonary atresia
  • Stenosis of pulmonary artery
Subclavian artery
  • Aberrant subclavian artery
Umbilical artery
  • Single umbilical artery
Great veins
Superior/inferior vena cava
  • Congenital stenosis of vena cava
  • Persistent left superior vena cava
Pulmonary vein
  • Anomalous pulmonary venous connection (Total, Partial)
  • Scimitar syndrome
Arteriovenous malformation
  • Cerebral arteriovenous malformation



noco/syva/cong/lyvd/tumr, sysi/epon, injr

proc, drug(C2s+n/3/4/5/7/8/9)

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