How are anomalous pulmonary venous return & transposition of great vessels different?

Both cause cyanosis. Both are congenital heart defects that cause cyanosis (less oxygen than normal in the arterial blood.) however that is the only similarity. In transposition of the great arteries, the primary problem is that the aorta arises from the right ventricle instead of the left ventricle. In t(total)apvr, the primary problem is that the pulmonary veins do not connect directly with the left atrium.

Related Questions

How does one differentiate between anomalous pulmonary venous return & transposition of great vessels?

TAPVR vs. TGA. The diagnosis of anomalous venous return (TAPVR) vs. transposition of the great vessels (TGA) is made in the newborn period. Simply put, the TAPVR baby usual presents 'pink' (no blueness) while the TGA baby will appear 'blue'. There are several variations of both TAPVR and TGA. The diagnosis can be accurately diagnosed by transthoracic ECHO and all are surgically operable with excellent results. Read more...

What exactly is the difference between anomalous pulmonary venous return & transposition of great vessels?

Unrelated defects. Anomalous pulmonary venous return means the veins which carry oxygen rich blood from the lungs do not enter the heart correctly. The blood is diverted and returns to the right rather than the left side of the heart. Transposition of the great vessels means the arteries leaving the heart are reversed. Oxygen rich blood returns to the lungs and oxygen poor blood returns to the body. Read more...
See below. Anomalous pulmonary venous return means taht 1 or more of the pulmonary veins returns blood from the lung to the right atrium instead of the left atrium. Transposition is a defect where the aorta origninate from the right ventricle and the pulmonary artery comes from the left ventricle which is backwards. Read more...

How to differentiate between anomalous pulmonary venous return & transposition of great vessels as the underlying disease?

Ultrasound. Pediatric cardiologist use ultrasound (an echocardiogram) to identify the type of congenital heart defect. In anomalous pulmonary venous return, the pulmonary veins do not connect to the left atrium in a normal manner. In transposition of the great arteries, the aorta is connected to the right ventricle and the pulmonary artery is connected to the left ventricle (backwards). Read more...