[Mitral stenosis and the problem of critical constriction in blood circulation]. / Mitral'nyi stenoz i problema kriticheskogo suzheniia v krovoobrashchenii.

The results of a combined echocardiographic study of 127 patients with mitral stenosis are reviewed. Echocardiographic and hemodynamic parameters are divided into 3 groups with respect to the severity of mitral stenosis. A relationship is demonstrated between mitral opening area and diastolic pressure gradient, as evidenced by dopplerography. The definition of critical mitral stenosis is given. A classification of the severity of mitral stenosis on the basis of two-dimensional echocardiography is offered, that provides indications for surgery.

[Evaluation of the results of closed mitral commissurotomy in the early and late periods after surgery, based on data from a complex echocardiographic examination]. / Otsenka rezul'tatov zakrytoi mitral'noi komissurotomii v rannie i otdalennye sroki posle operatsii po dannym kompleksnogo ékhokardiograficheskogo obsledovaniia.

A study of early and late results of closed mitral commissurotomy demonstrated a 1.8-fold increase in two-dimensional mitral opening area, as compared to preoperative data, largely due to an increase in intercommissural diameter, with intercuspid diameter only slightly changed. In most cases, the operation was not conducive to complete recovery of the mitral opening area that averaged 3 cm2. Impulse doppler-echocardiography showed a 2.1-fold postoperative decrease in diastolic blood pressure gradient. The operation was less effective in cases of mitral calcinosis. One-dimensional investigation demonstrated an insignificant postoperative variation in Vef of the mitral anterior cusp.