Key result
Elevated heart rates improve mild stenosis models but worsen severe stenosis by increasing flow instabilities.
Why the study?
The effects of increased heart rates in highly stenosed carotid arteries are not well explored, and understanding flow features and stress distribution may help clinicians prescribe better exercise schedules.
Does elevated heart rate affect hemodynamics differently in healthy versus stenosed carotid arteries?
Population
Healthy and stenosed carotid arterial geometries
Comparison
Elevated heart rates vs normal heart rate across different stenosis levels
Design
Immersed boundary method-based computational framework study
Authors
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May caution against intense exercise in severe carotid stenosis; leaves open need for clinical validation of simulated flow effects.
Does elevated heart rate affect hemodynamics differently in healthy versus stenosed carotid arteries?
Elevated heart rates may improve hemodynamics in healthy or mildly stenosed carotid arteries but exacerbate adverse hemodynamic forces in severe stenosis, potentially increasing the risk of plaque rupture.
Khan et al. (2023) studied Stenosis in the internal carotid arteries. Elevated heart rates vs. Normal heart rates was evaluated on Hemodynamics (oscillatory shear index, wall shear stress, pressure drops). Elevated heart rates reduced oscillatory shear index in healthy and mild stenosis models but worsened hemodynamics in severe stenosis by increasing flow instabilities and wall shear stress.
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