How does Ebstein's tricuspid valve deformity occur?

Ebstein's anomaly is caused by the

enlargement of the atrioventricular ring and right ventricle and the deformation of the valve leaflets. It is easy to cause Ebstein's anomaly. The phenomenon of patent foramen ovale or atrial septal defect is also easy to cause Ebstein's anomaly.

2. Predisposing factors

For pregnant women with rubella, influenza and mumps and other viral infectious diseases in early pregnancy, it may affect the growth and development of the fetus, thus causing Ebstein's anomaly.