[Means of improving the hydrodynamic characteristics of an aortic valve xenobioprosthesis].
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Aortic Valve↗
Biomedical subjects
L S Barbarash
Publications and source records attributed to L S Barbarash.
[Results of transplantation of heart bioprostheses].
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Adolescent↗
[Study of heart valve xenobioprostheses by ESR].
Copper (II) ions were used as paramagnetic labels to study the role of functional groups of structural proteins (SP) of xenobioprosthetic valves in the process of transition metal ions coordination as well as for investigation of changes in complexing properties of these proteins under influence of the recipient media. The dependence of Cu(II) coordination sphere composition in complexes with SP on the pH-value has been determined. Research of influence of the valves' calcification process on the coordination properties of the SP are in progress.
Animals↗
[The hydrodynamic evaluation of some types of aortocoronary bypass].
Liquid flow in cylindrical and converging transplants for aortocoronary bypass, in intricately branching vascular systems were experimentally studied by polarization optic method using "jumping" aortocoronary shunts and different flow regimens, sites and severity of vascular stenosis. Hydrodynamic advantages of conic shunts in comparison with cylindrical ones were revealed, the rest shunting conditions being equal. It was found that when "jumping" shunts are used the distal portion of the coronary artery which is shunted the first should not be dilated by more than 50%. The end anastomosis should be formed with the artery more significant for myocardial blood supply.
Anastomosis, Surgical↗