Kríz Jan, Seba Petr
University of Hradec Králové, Rokitanského 62, CZ - 500 03 Hradec Králové, Czech Republic.
Nonlinear Biomed Phys. 2008 Feb 22;2(1):1. doi: 10.1186/1753-4631-2-1.
Noninvasive recording of movements caused by the heartbeat and the blood circulation is known as ballistocardiography. Several studies have shown the capability of a force plate to detect cardiac activity in the human body. The aim of this paper is to present a new method based on differential geometry of curves to handle multivariate time series obtained by ballistocardiographic force plate measurements.
We show that the recoils of the body caused by cardiac motion and blood circulation provide a noninvasive method of displaying the motions of the heart muscle and the propagation of the pulse wave along the aorta and its branches. The results are compared with the data obtained invasively during a cardiac catheterization. We show that the described noninvasive method is able to determine the moment of a particular heart movement or the time when the pulse wave reaches certain morphological structure.
Monitoring of heart movements and pulse wave propagation may be used e.g. to estimate the aortic pulse wave velocity, which is widely accepted as an index of aortic stiffness with the application of predicting risk of heart disease in individuals. More extended analysis of the method is however needed to assess its possible clinical application.
由心跳和血液循环引起的运动的无创记录被称为心冲击图描记法。多项研究表明测力板能够检测人体心脏活动。本文旨在提出一种基于曲线微分几何的新方法，用于处理通过心冲击图测力板测量获得的多变量时间序列。
我们表明，由心脏运动和血液循环引起的身体反冲提供了一种无创方法，用于显示心肌运动以及脉搏波沿主动脉及其分支的传播。将结果与在心脏导管插入术中通过侵入性方法获得的数据进行了比较。我们表明，所描述的无创方法能够确定特定心脏运动的时刻或脉搏波到达特定形态结构的时间。
对心脏运动和脉搏波传播的监测可用于例如估计主动脉脉搏波速度，主动脉脉搏波速度作为主动脉僵硬度的指标被广泛接受，可用于预测个体心脏病风险。然而，需要对该方法进行更深入的分析以评估其可能的临床应用。
