Children cardiology and cardio surgery handle with congenital heart diseases treatment. Interventional cardiology is a part of children cardiology, which enables to treat some congenital heart diseases without the need of surgery. Interventional cardiology also helps patients before or after surgery. Interventional cardiology is utilizable in patients from birth to adulthood. There is a great age diversity, as well as heart diseases diversity of patients. Child’s organism grows up and develops. The size of the heart and the vessels, as well as its regenerative capacity and its metabolism is changing during development. These particular facts often limit possibilities of catheterization intervention.