Overriding aorta

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Overriding aorta

Diagram of a healthy heart and one suffering from overriding aorta
ICD-10 | Q25.4
(EUROCAT Q25.42)
ICD-9 | 747.21

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]

## Overview

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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 contains 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.

Heart: Tetralogy of Fallot; Left Anterior Oblique with VSD and Overriding aorta (MRI)

## External links

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* Diagram at radiology.vcu.edu

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Congenital malformations and deformations of circulatory system (Q20-Q28, 745-747)

Cardiac chambers and connections|

Persistent truncus arteriosus \- Double outlet right ventricle (Taussig-Bing syndrome) - Transposition of the great vessels (dextro, levo)

Cardiac septa|

Ventricular septal defect \- Atrial septal defect (Lutembacher's syndrome) - Atrioventricular septal defect (Ostium primum) - Tetralogy of Fallot \- Eisenmenger's syndrome

Right: pulmonary and tricuspid valves|

pulmonary valves (stenosis, insufficiency) - tricuspid valves (stenosis, atresia) - Ebstein's anomaly

Left: aortic and mitral valves|

aortic valves (stenosis, insufficiency, bicuspid) - mitral valves (stenosis, regurgitation) - Hypoplastic left heart syndrome

Other congenital malformations
of heart|

Dextrocardia \- Levocardia \- Cor triatriatum

Great arteries|

aorta (Patent ductus arteriosus, Aortic coarctation, Interrupted aortic arch, Overriding aorta, Aneurysm of sinus of Valsalva, Vascular ring) - Pulmonary atresia

Great veins|

Persistent left superior vena cava \- Total anomalous pulmonary venous connection \- Scimitar syndrome

Other|

Arteriovenous malformation (Cerebral arteriovenous malformation)

See also non-congenital conditions (I, 390-459)

de:Reitende Aorta

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