title: [Comparative hydrodynamic study of artificial heart valves in pulsating flow].
abstract: A comparative hydrodynamic study of artificial heart valves with spherical, hemispherical and lentil-shaped obturative elements has been carried out under the non-stationary conditions. The valves resistance coefficient is higher in the lentil-shaped valves. With the increase of pulse rate the stroke volume of the valves of all the types drops, and the regurgitation increases.
mesh_terms: D001021:Aortic Valve; D005069:Evaluation Studies as Topic; D006350:Heart Valve Prosthesis; D006439:Hemodynamics; D006801:Humans; D008943:Mitral Valve; D008954:Models, Biological; D011474:Prosthesis Design; D011674:Pulse
vernacular_title: Sravnitel'noe gidrodinamicheskoe issledovanie iskusstvennykh klapanov serdtsa v pul'siruiushchem potoke.