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June 1, 2024Physics of Fluids

Hemodynamic coupling between a primary atherosclerotic plaque and subsequent secondary lesions

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Key Points

Secondary aneurysms restore normal coronary hemodynamics downstream of a primary stenosis, halting the progressive sequence of atherosclerotic plaques and protecting vascular tissue.
Stenoses exceeding 50% area reduction induce altered flow and downstream plaque formation, whereas secondary aneurysms normalize wall shear stress metrics past their distal shoulder.
Computational fluid dynamics simulations in 3D-printed phantoms and patient angiograms reveal that aneurysm formation halts endothelial activation by restoring flow conditions.

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Implication

Experimental and simulation study demonstrates that downstream aneurysms restore disturbed coronary flow, indicating hemodynamic compensation that prevents further endothelial damage.

Cite This Study

Nooraeen et al. (2024) studied this question.

synapsesocial.com/papers/68e66b13b6db6435875f6309 https://doi.org/10.1063/5.0202978

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