Novel (made in Russia) nonselective b-blocker with a1-blocking properties proxodolol was given to 30 patients with ischemic heart disease, NYHA class II-III chronic heart failure (CHF) and left ventricular ejection fraction (LVEF) <40%. Methods of control included clinical examination, registration of hemodynamic and morphofunctional parameters of the heart. Proxodolol caused clinical improvement which appeared as reduction of signs of CHF and betterment of myocardial contractile function with 14% increase of LVEF according to data of echocardiography. Side effects of proxodolol were noted in 26.7% of cases and required withdrawal of the preparation in 6.7% of patients.