Abstract
We experienced a case of infravalvular left ventriclar-right atrial communication, in which a communication opening was seen at a little to right ventricle of tricuspid valve ring. Harsh systolic murmur similar to that peculiar to ventricular septal defect (VSD) was heard. Chest roentgenography revealed an enlarged right atrium, and cardiac echography showed a blood flow of left ventriclar-right atrial shunt. Intracardiac catheterization exhibited an increase in oxigen partial pressure at the right atrium. Angio cardiography confirmed the presence of shunt from left ventricle to right atrium.
This cardiac disease is rare, and a total of 63 cases reported in Japan was analysed to clarify the characteristic features.
