Title :
A numerical model of the circulatory system for IABP simulation: effect of the balloon volume and of its synchronisation
Author :
De Lazzari, C. ; Ferrari, G. ; Mimmo, R. ; Tosti, G. ; Ambrosi, D. ; Italia, M.
Author_Institution :
Biomed. Technol. Inst., CNR, Rome, Italy
Abstract :
The study of the interaction between an Intra Aortic Balloon Pump (IABP) and the cardiovascular system is the goal of this work. It is analysed in terms of pressure, flow and some energetic relationships by modular numerical models of the cardiovascular system and IABP. Data have been computed as a function of the balloon volume and time delay. The analysed variables are end diastolic pressure, cardiac output external work, oxygen consumption and cardiac mechanical efficiency. Energetic variables have been computed from the pressure-volume plane representation of the ventricular work cycle. A starting pathological condition was used as control and compared with IABP assisted data. In this context, research towards an optimum IABP control strategy appears to be a compromise between opposite requirements; the IABP control strategy ought anyway to be adjusted during heart recovery.
Keywords :
haemodynamics; physiological models; balloon volume; cardiac mechanical efficiency; cardiac output external work; cardiovascular system; circulatory system; control strategy; end diastolic pressure; energetic variables; energy relationship; heart recovery; intraaortic balloon pump; modular numerical models; numerical model; oxygen consumption; pathological condition; pressure-volume plane representation; time delay; ventricular work cycle; Cardiology; Cardiovascular system; Circulatory system; Computer displays; Delay effects; Electric resistance; Mechanical variables control; Numerical models; Pathology; Programmable logic arrays;
Conference_Titel :
Computers in Cardiology 1995
Conference_Location :
Vienna, Austria
Print_ISBN :
0-7803-3053-6
DOI :
10.1109/CIC.1995.482737
