• Ekta
• Reeta Devi

Heart problems are the most common problems causing large number of deaths worldwide. Heart failure or heart tissues’ functions imbalance is the major reason seen almost in 90% cases of deaths due to heart disease which causes the emerging heart transplantation exercises. Heart transplantation exercises are practiced either using same species (donor and acceptor) or on different species. When species are same, chances of successful transplantation increased but transplantation between different species encounters a number of factors to be taken care of. Torso (donor and acceptor) size compatibility is very common factor in both (same species and different species) types of transplantation. Therefore, through this paper we would like to reflect the effect of torso size on epicardial (heart surface) and body surface potentials. A 2 layers concentric spheres model is used to model the electrical activity of a human body with inner sphere representing the heart and outer sphere representing the torso. Analytically, the effect of torso size variability is investigated by performing simulation of the model (concentric spheres) keeping origin at heart center with various diameters and comparing the results to those calculated numerically. The simulation results reveal a linear relationship between torso size and body surface potentials, which is consistent with previous research. In the absence of other inhomogeneous regions between the heart and the thorax, numerical calculations show that a 10% increase in torso size results in 0.06 percent - 0.1 percent and 0.01 percent - 0.03 percent increases in body surface and epicardial potentials, respectively.

Torso size, Forward Model of ECG, Body surface potentials, epicardial potentials and concentric spheres model.

"Analyzing the Influence of Chest Size on Heart and Body Surface Potentials in Forward Modeling of ECG", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 1, page no.784-787, January-2017, Available :http://www.jetir.org/papers/JETIR1701524.pdf

"Analyzing the Influence of Chest Size on Heart and Body Surface Potentials in Forward Modeling of ECG", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 1, page no. pp784-787, January-2017, Available at : http://www.jetir.org/papers/JETIR1701524.pdf