[Study of functional parameters of prosthetic cardiac valves]. / Issledovaniia funktsional'nykh kharakteristik iskusstvennykh klapanov serdtsa.

A set of methods is offered, which enables to examine, with more details, the functional characteristics of the valves and to analyze them comparatively. The thus obtained functional characteristics make it possible to compare the valves and to select the best one prior to implantation. The results of a clinical study of the functioning of a valve, implanted by a new method involving a high-sensitivity solid sensor, are described.

[Experimental study of the hydrodynamics of modern artificial heart valves]. / Eksperimental'noe issledovanie gidrodinamiki sovremennykh iskusstvennykh klapanov serdtsa.

The paper presents the results of experimental studies of the hydrodynamics of currently available artificial cardiac valves (ACV). Photo chromatographic visualization was used to study the hydrodynamics of ACV. The hydrodynamic characteristics of a MIX discal valve (Russia) and a St. Jude two-leaflet one (USA), which have been clinically applied for more than 15 years, are presented.

[Experimental study of the relationship of the level of blood hemolysis and the design of artificial heart valves]. / Eksperimental'noe issledovanie zavisimosti urovnia gemoliza krovi ot konstruktsii iskusstvennykh klapanov serdtsa.

The paper deals with experimental studies into the level of hemolysis that accompanies the performance of artificial cardiac valves (ACV). The studies were conducted by two ways. The first study determined the level of hemolysis when artificial cardiac valves worked and donor blood performed. The second one was that a polymer was added to the model physiological fluid, the degree of hemolysis was determined by the changes occurring in the time of relaxation of elastic stress in the model fluid samples taken during tests. The experiments showed polyethylene oxide break-down to be the most accurately modelling process of hemolysis.