Atrioventricular canal

When this process does not happen correctly, a child will develop atrioventricular canal defect which occurs in 2 out of every 10,000 births.

[2] Half of the children who are untreated with this condition die during their first year due to heart failure or pneumonia.

There is a problem when there are holes present in the walls that separate chambers (septa), as well as when valves are incorrectly constructed.

The structures that develop from the fusion of the endocardial cushions are: Atrioventricular canal defect may be divided into partial or complete forms.

In the partial form, openings between the left and right atria and improper formation of the mitral valve exist.

A photo of the basic anatomical structures of the heart. During normal heart development all four chambers are separated and the mitral and tricuspid valves are properly developed.
This is an echocardiography of a complete atrioventricular canal defect . There is a clear absence of the lower septum that would separate all four chambers of the heart.