[Left ventricle function in isolated mitral stenosis. Regional angiographic study during the ejection phase].

Twenty two patients with rheumatic mitral stenosis and 12 healthy individuals were studied, using the following parameters: 1) Basal (B), Medial (M) and apical (A) mean velocity of circunferential shortening (VMAC); 2) Ejection fraction (EF); 3) Mid-systolic ejection fraction (FE 50); 4) Relative ejection fraction (REF = FE 50/FE). The student T comparing the patients with mitral stenosis to the control group showed statistical difference in all the parameters studied, but in the M and A, VMAC. In 13 patients (59%) the EF and the REF were found diminished, on the other hand, the EF 50 was definitively abnormal in 19 patients (86%). Twenty one patients (96%) showed abnormalities at least in two of the mentioned parameters and finally, only one had normal ventricular function. We conclude that the ejection ventricular function studied with "regional" indexes is almost always abnormal in patients with mitral stenosis.