Bond graph model for the right atrium of heart

The discussion on the mathematical modeling of atrium is not still deliberated and most of the literature and research based on the model and functioning of ventricles of heart. In this paper we tried to formulate the model for right atrium using Bond Graph technique. The Bond Graph is a unified modeling approach to portray multi domain-energy systems. Cardiovascular system is a very complex system which includes interaction of several subsystems like the heart and the circulatory system. Several energy domains describe the CVS activity; such as mechanical, hydraulic, chemical and electrical events. To take into account all these characteristics, the bond graph seems to provide a unified approach. In this research paper the right atrium is modeled for ejection phase using bond graph unified modeling. In this paper the unified Bond Graph model of the right atrium is presented, simulated and validated. The results obtained using MATLAB tool are compared with CVS physiological data present in Simbiosys (a software for simulating biological systems) and also with the CVS Wiggers diagram of heart cycle. The model takes into account a simplified description of the right atrium which is close to the medical investigation promoting the apperception and the dialogue between engineers and physiologists.