Národní úložiště šedé literatury Nalezeno 6 záznamů.  Hledání trvalo 0.01 vteřin. 
Pulsatory flow under rotary pump used to failing heart support
Musil, Jan ; Převorovská, Světlana ; Leitermann, D. ; Pražák, Josef ; Maršík, František
The hydrodynamic resistance values increase in the mock-line circuit verified in some cases the concommitant phenomenon due to the continuous supporting device, i. e. complete destruction of the pulsatory wave form into the chaotic turbulent flow thro the supported system.
Circuit resistance modeling in failing heart rotary pump support
Musil, Jan ; Pražák, Josef ; Leitermann, D.
The stepwise resistance increase caused by the throttle valve usage in the mock-line circuit comprising the pulsating ventricle in failing heart modus and supported by rotary pump set up in parallel was studied. It appears thus important to regulate support system producing a continuous type of flow to such a regime not allowing the pulsating flow of the failing heart to disappear and preventing the mean systemic pressure value before substantial increase.
Systemic compliance effect un failing heart support (mechanical model study)
Musil, Jan ; Pražák, Josef ; Leitermann, David
The systemic compliance changes during singel rotary pump support on a symplified circuit were studied. Thus rotation speed of the supporting rotary pump, frequency rate of the failing ventricle under the changing conditions of compliance of the systemic branch (aortic root) were invesigated. The systemic compliance effect enhances the common flow of the rotary pump and the pulsating supported ventricle.
Heart failure support in mathematical model with baroreflex control
Musil, Jan ; Převorovská, Světlana ; Maršík, František
The function of the mechanical support in the case of the heart failure in the consequence of the left heart ventricle hypocontractility has been simulated by the numerical model of the cardiovascular system with the baroreflex control which has been developed at the IT CAS.

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