GEMSS |

Cardiac flow input to model | The cardiac flow profile shown opposite was applied to the model. The simulation was run for five cardiac cycles to allow the system to settle down, and the results for the last cardiac cycle are shown. The results given below compare a model in which a stenosis has been created in the left femoral artery with the standard Westerhof model. The stenosed artery radius was decreased from 2.38mm to 1mm, resulting in a reduction in the lumen area by 82%. The analysis below shows that the flow in the left iliac artery, upstream of the stenosis, is reduced. The flow in the left femoral artery, downstream of the stenosis, is also reduced, and by a greater proportion. The flows in the right femoral and iliac arteries are affected little by the introduction of the stenosis. The final figure shows the pressure drop across the stenosis at time 0.3s. |
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MAXIMUM ARTERIAL FLOW | Model with Left Femoral Artery Stenosis | Standard Model |
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Left Iliac (above stenosis) | 28.0ml/s (46%) | 33.0ml/s |

Right Iliac | 33.5ml/s (54%) | |

Left Femoral (below stenosis) | 9.9ml/s (42%) | 13.9ml/s |

Right Femoral | 13.7ml/s (58%) |

ARTERIAL FLOW, ml/s | Model with Left Femoral Artery Stenosis | Standard Model |
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Left Iliac (above stenosis) |
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Right Iliac | ||

Left Femoral (below stenosis) |
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Right Femoral |