Anatomic diagnosis of congenital heart disease. A practical approach based on the sequentiality principle

based on the sequentiality principle, this review proposes a practical method that allows the systematization of the anatomic diagnosis of congenital heart disease. we emphasize the need to use sequential connection between the different cardiac segments: atria, ventricles and great arteries. five ordered steps are defined, which include determination of atrial situs and of the connection features between the ventricles and the great arteries. related lesions and some additional special features are a second stage in the sequential analysis of congenital heart disease, which is also important for the integral diagnosis.