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- W2308533928 abstract "Abstract In most cases of diseased heart valves, they can be repaired or replaced with biological or mechanical prostheses. Biological prostheses seem to be safer than mechanical ones and are applied with good clinical outcomes. Their disadvantage, when compared with mechanical valves, is durability. In the development and application of mechanical and biological heart valves, a significant role can be played by a Hybrid (Hydro-Numerical) Circulatory Model. The aim of this paper is to demonstrate the opportunities created by the hybrid model for investigations of mechanical heart valves and their computer models under conditions similar to those of the circulatory system. A diode-resistor numerical valve model and three different design mechanical aortic valves were tested. To perform their investigations, computer applications were developed under RT LabView to be run on a PC. Static and dynamic characteristics of the valves were measured and registered - pressure in the numerical time-varying elastance left ventricle ( p LV ), in the aorta ( p as ) and flow ( f ), proving, among other factors, that 1) time delay of p as with respect to p LV is mainly related to the valve’s opening time, and 2) the valves of substantially different designs tested under identical hydrodynamic conditions reveal nearly the same dynamic performance." @default.
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- W2308533928 date "2015-09-01" @default.
- W2308533928 modified "2023-09-27" @default.
- W2308533928 title "A hybrid (hydro-numerical) circulatory model: investigations of mechanical aortic valves and a numerical valve model" @default.
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- W2308533928 doi "https://doi.org/10.1515/bpasts-2015-0071" @default.
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