[The genetic incidence on QT interval values in ECG (author's transl)]

On the grounds of the well-known finding of the familial incidence of the elongated QT interval in various conditions, a research has been carried on in order to point out the possible genetic conditioning of this electrocardiographic pattern. From the analysis of the QTc values in the components of 28 families of carriers of "labile pseudo-ischemic T wave" it comes out that the QTc phenomenon is conditioned by the heredity. The distribution of the aplotypes HLA does not permit to settle any correlation with these genetic markers on account of the restricted number of the examined cases.