[Apparatus for cardiosynchronized artificial circulation].

The development of outfits for ancillary circulation is oriented towards improvement and construction of new pneumatic, hydraulic and electromechanical actuating systems--units intended for an optimal disposition of pressure waves moving from the pump to the aorta, etc. An inference is drawn about advantages and perspectives offered by functionally monitored actuating units, as well as about the need for the pulsating stream to pass through the low-power side intended to pre-set the shape of the pressure curve.

[Characteristics of hemocoagulation in different periods of the development of a venous intravascular thrombus].

Experiments were conducted on rabbits. A study was made of peculiarities of blood coagulation and of the functional changes in platelets at the period of the thrombus organization, and also at various stages after its formation in the femoral vein. It appeared that at the period of the thrombus formation and during the first 5 minutes after its organization there occurred hypercoagulation changes in the blood and hypocoagulation of the plasma against the background of decrease in fibrinogen, hyperfibrinolysis, hyperheparinemia and thrombocytopenia.

[Change in catecholamine and acetylcholine concentration in myocardial tissue in assisted circulation].

The authors stress the importance of reactions associated with the concentration of biologically active substances in the body tissues, in particular their influence on the contractility and escitability of the heart muscle. They cite the results consequent upon a study on the catecholamines and acetylcholine content in the myocardial tissue of the left ventricle and left auricle of the heart before and after institution of an auxilliary circulation effected with the aid of a valveless pump connected to the subclavicular artery in 22 dogs. An analysis of the results demonstrated that by producing counter-pulsation with the pump the concentration of catecholamines and acetylcholine in the tissues of the left head diminishes, but the fall of the catecholamines concentration does not reach the level typical of cardiac insufficiency.

[Clinical problems of vascular surgery during transplantation of the kidney].

In transplantation of 245 kidneys in patients with chronic renal insufficiency in the right (75% of all grafting procedures) and in the left iliac region several variants of vascular anastomoses were elaborated and employed. Technical details are described, and some valuable recommendations are given.

[Comparative socio-demographic characteristics of schizophrenic patients committing socially dangerous acts].

The report is based on a statistical analysis of a reregistration of mental patients on the territory of a large city. The authors systematized and analyzed (with the aid of a computer) data concerning the age and sex structure and the special traits of a socio-working adaptation of schizophrenic patients who committed socially dangerous acts during the period of their illness. These data were correlated with similar ones in respect to all the registered schizophrenic patients.

[Adhesion of blood platelets to electric-featuring polymers].

The authors studied the effect of electric potential arising on the plastic surface upon the blood clotting process. The study was performed according to the Breddin method. The study concerned fluorosilicone rubber, fluoroplast, polyester, polyethylene and polyvinyl chloride with various surface potentials.

[Uremic polyneuropathies].

The report is concerned with the results of a study of polyneuropathy in 75 patients with acute and chronic renal insufficiency. The authors described the clinical characteristics of the different forms of neuropathy. In acute renal insufficiency the first signs of polyneuropathy appear during the stage of polyuria and are reversible.