The cause of most congenital heart defects is unknown. Many factors seem to be involved.
Factors that increase the risk for this condition during pregnancy include:
Alcoholism in the mother Diabetes Mother who is over 40 years old Poor nutrition during pregnancy Rubella or other viral illnesses during pregnancy
There is a high incidence of chromosomal disorders in children with tetralogy of Fallot, such as Down syndrome and DiGeorge syndrome (a condition that causes heart defects, low calcium levels, and immune deficiency).
What causes Tetralogy of Fallot?
The cause of most congenital heart defects is unknown. Many factors seem to be involved.
Factors that increase the risk for this condition during pregnancy include:
Alcoholism in the mother Diabetes Mother who is over 40 years old Poor nutrition during pregnancy {{NAME}} or other viral illnesses during pregnancy
There is a high incidence of chromosomal disorders in children with tetralogy of {{ORGANIZATION}}, such as Down syndrome and {{NAME}} syndrome (a condition that causes heart defects, low calcium levels, and immune deficiency).