Theoretical study of the flow rate toward the right heart territory in case of total occlusion of the right coronary artery

Medical Engineering & Physics
Mahmoud MaasraniJean-Philippe Verhoye

Abstract

In this work, patients with severe coronary disease and chronic occlusion of the right coronary artery (RCA) are studied. In this clinical situation, the collateral circulation is an important factor in the preservation of the myocardium until reperfusion of the area at risk. An accurate estimation of collateral flow is crucial in surgical bypass planning as it can influence the outcome of a given treatment for a given patient. The evaluation of collateral flow is frequently achieved using an index (CFI, Collateral Flow Index) based on pressure measurements. Using a model of the coronary circulation based on hydraulic/electric analogy, we demonstrate, through theoretical simulations, that a wide range of fractional collateral flow values can be obtained for any given distal pressure difference depending on the values of the capillary and collateral resistances.

References

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Aug 3, 2007·Interactive Cardiovascular and Thoracic Surgery·Jean-Philippe VerhoyeHervé Corbineau
Apr 22, 2008·Annals of Biomedical Engineering·Mahmoud MaasraniAgnes Drochon
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Jan 11, 2011·American Journal of Physiology. Heart and Circulatory Physiology·Andreas IndermühleChristian Seiler

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Citations

Mar 25, 2014·IEEE Transactions on Bio-medical Engineering·David OjedaAlfredo I Hernández

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