The mean manifest electrical axis of the ventricular activation process (ÂQRS) in congenital heart disease: A new approach in electrocardiographic diagnosis

A new approach in the electrocardiographic diagnosis of congenital heart disease is studied. The combination of the determination of ÂQRS in the frontal plane with the knowledge of the electrocardiographic pattern of each congenital heart malformation permits the main diagnosis of the anomaly in a great number of cases.