Overriding aorta

Overriding aorta

Diagram of a healthy heart and one suffering from overriding aorta
Classification and external resources
Specialty	medical genetics
ICD-10	Q25.4 (EUROCAT Q25.42)
ICD-9-CM	747.21

An overriding aorta is a congenital heart defect where the aorta is positioned directly over a ventricular septal defect (VSD), instead of over the left ventricle. The result is that the aorta receives some blood from the right ventricle, causing mixing of oxygenated and deoxygenated blood, and thereby reducing the amount of oxygen delivered to the tissues.

It is one of the four findings in the classic tetralogy of Fallot. The other three findings are right ventricular outflow tract (RVOT) obstruction (most often subpulmonary stenosis), right ventricular hypertrophy (RVH), and ventricular septal defect (VSD).

Congenital vascular defects / Vascular malformation (Q25–Q28, 747)

Great arteries/
other arteries

Aorta	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

This article is issued from Wikipedia - version of the 10/7/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.