Abstract
Phasic coronary flow is determined by the dynamic interaction between central hemodynamics and myocardial and ventricular mechanics. Various models, including the waterfall, intramyocardial pump and myocardial structural models, have been proposed for the coronary circulation. Concepts such as intramyocardial pressure, local elastance and others have been proposed to help explain the coronary compression by the myocardium. Yet some questions remain unresolved, and a new model has recently been proposed, linking a muscle collagen fibrous model to a physiologically based coronary model, and accounting for transport of fluids across the capillaries and lymphatic flow between the interstitial space and the venous system. One of the unique features of this model is that the intramyocardial pressure (IMP) in the interstitial space is calculated from the balance of forces and fluid transport in the system, and is therefore dependent on the coronary pressure conditions, the myocardial function and the transport properties of the system. The model predicts a wide range of experimentally observed phenomena associated with coronary compression.
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Beyar, R., Sideman, S. (1997). Dynamic Interaction between Myocardial Contraction and Coronary Flow. In: Sideman, S., Beyar, R. (eds) Analytical and Quantitative Cardiology. Advances in Experimental Medicine and Biology, vol 430. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5959-7_11
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DOI: https://doi.org/10.1007/978-1-4615-5959-7_11
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