FIELD: medicine, cardiosurgery. SUBSTANCE: skin, pericardium and epicardium are dissected in area of an apex beat, expander is introduced into cavity of left ventricle to conduct operation under the control of preliminarily applied P-shaped suture, then contrasting of left atrium is carried out. Expander's tip is installed into the hole of atrio-ventricular valve under the control of videomonitor and electrocardiogram. EFFECT: higher efficiency of therapy in patients with the risk of surgical interference.
