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ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

ANALYSIS OF BLOOD FLOW IN THE NORMAL AND OBSTRUCTED CORONARY EPICARDIAL TREE

Get access (open in a dialog) DOI: 10.1615/IHTC9.770
pages 253-256

Abstract

A new model describes the dynamic non-linear behavior of the coronary circulation, i.e. the blood supply to the heart muscles. In particular, a detailed description of the epicardial coronary arteries surrounding the heart muscle, normally ignored in normal hearts, was introduced to account for pathological flow obstructions. These surface arteries were related to their respective perfusion zones in the muscle. The epicardial surface arteries were divided into 17 segments, and each perfusion zone was characterized by a group of 3 vessels. The model has the ability to regulate itself in response to an increase in flow demand due to stress, or to flow obstruction due to arterial stenosis. This detailed representation allows for the analysis of the instantaneous local pressures and flows, and includes the effect of a coronary arterial stenosis and the corresponding collateral circulation. Preliminary results are consistant with available data.