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arXiv physics/0607201physics.med-phphysics.bio-ph
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左心室功能的两相谐波模型

A two phase harmonic model for left ventricular function

S. Dubi, C. Dubi, Y. Dubi

摘要:

提出了一种左心室机械运动的极小模型。该模型假设左心室是一个谐振子,具有两个不同的阶段,模拟收缩和舒张阶段,在这两个振幅和弹性常数的振荡器是不同的。考虑到左心室内的压力,该模型示出与左心室的功能参数的定性协议。该模型允许保留收缩期左心室功能的心力衰竭的自然解释,也称为舒张期心力衰竭。具体而言,左室壁硬度增加后左室充盈压升高归因于旨在保持心率和心输出量的机制。

英文摘要:

A minimal model for mechanical motion of the left ventricle is proposed. The model assumes the left ventricle to be a harmonic oscillator with two distinct phases, simulating the systolic and diastolic phases, at which both the amplitude and the elastic constant of the oscillator are different. Taking into account the pressure within the left ventricle, the model shows qualitative agreement with functional parameters of the left ventricle. The model allows for a natural explanation of heart failure with preserved systolic left ventricular function, also termed diastolic heart failure. Specifically, the rise in left ventricular filling pressures following increased left-ventricular wall stiffness is attributed to a mechanism aimed at preserving heart rate and cardiac output.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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