[Interventricular communication with infundibular reaction (author's transl)].

Ten patients exhibiting an interventricular communication and an infundibular reaction are presented. As a key premise for selection of cases, an angiohemodynamic study and presence of a gradient at an infundibular level above 25 mm. Hg. were required. Clinic characteristics as well as electrocardiogram, radiology and angiohemodynamic study of all patients are commented. Incidence in different studies, as well as in our own, is discussed, which was found to be of 9%. Similarly, diagnosis of evolutive form of interventricular communication and evolutive character in question is commented; four cases of their own are provided. The various explanatory theories of infundibular stenosis are commented.