首页> 外文会议>4th International symposium on advanced topics in electrical engineering (ATEE 2004) >HEART RATE AND HEMODYNAMIC VARIATIONS CONTROLUSING A PULSATILE MODEL OF THE HEART
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HEART RATE AND HEMODYNAMIC VARIATIONS CONTROLUSING A PULSATILE MODEL OF THE HEART

机译:心率的心律模型控制心率和血液动力学变化

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Almost all models of the cardiovascular system (CVS) consists of sets of differentialrnequations, representing relationships between continuous signals, such as mean arterial bloodrnpressure (BP) and heart rate (HR). For long-term regulation of the CVS, the pulsatile character of thernheartbeat is neglected. In the present model, the spontaneous short-term variability in arterial bloodrnpressure and heart rate is studied, using a beat-to-beat model of cardiovascular system. The studyrnemphasize the control of HR and peripheral resistance by the baroreflex and the mechanical effects ofrnrespiration on blood pressure and heart rate. The model is described by a set of difference equations.rnIn this way, the features of each heartbeat (e.g. length of the interbeat interval, or the systolicrnpressure) depend on the features of previous beats.
机译:几乎所有的心血管系统模型(CVS)都由微分方程组组成,这些微分方程组代表连续信号之间的关系,例如平均动脉血压(BP)和心率(HR)。对于CVS的长期调节,可以忽略心跳的搏动特性。在本模型中,使用心血管系统的逐跳模型研究了动脉血压和心率的自发短期变化。该研究强调通过压力反射控制心率和周围阻力,以及呼吸对血压和心率的机械作用。该模型由一组差分方程来描述。这样,每个心跳的特征(例如,心跳间隔的长度或收缩压)取决于先前心跳的特征。

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