منابع مشابه
Separation of Arterial Pressure into Solitary Waves and Windkessel Flow
A simplified model of arterial blood pressure intended for use in model-based signal processing applications is presented. The main idea is to decompose the pressure into two components: a travelling wave describes the fast propagation phenomena predominating during the systolic phase and a windkessel flow represents the slow phenomena during the diastolic phase. Instead of decomposing the bloo...
متن کاملModeling the Role of Arterial Windkessel in the Enhancement and Synchronization of Low Frequency Vasomotor Activity
Arterial windkessel mechanisms and arterial pressure (AP) low frequency (LF) waves were investigated by means of simple lumped models of a compliant resistant/arterial tree and of flow regulation in peripheral vascular districts (PVDs) with three types of feedback: 1) delay, 2) Van der Pol oscillator, 3) relay; all were able to actively compensate flow changes and to simulate peripheral LF vaso...
متن کاملTotal arterial inertance as the fourth element of the windkessel model.
In earlier studies we found that the three-element windkessel, although an almost perfect load for isolated heart studies, does not lead to accurate estimates of total arterial compliance. To overcome this problem, we introduce an inertial term in parallel with the characteristic impedance. In seven dogs we found that ascending aortic pressure could be predicted better from aortic flow by using...
متن کاملDevelopment and Characterization of the Arterial Windkessel and Its Role During Left Ventricular Assist Device Assistance.
Modeling of the cardiovascular system is challenging, but it has the potential to further advance our understanding of normal and pathological conditions. Morphology and function are closely related. The arterial system provides steady blood flow to each organ and damps out wave fluctuations as a consequence of intermittent ventricular ejection. These actions can be approached separately in ter...
متن کاملIncrease in pulse wavelength causes the systemic arterial tree to degenerate into a classical windkessel.
Two competing schools of thought ascribe vascular disease states such as isolated systolic hypertension to fundamentally different arterial system properties. The "windkessel school" describes the arterial system as a compliant chamber that distends and stores blood and relates pulse pressure to total peripheral resistance (R(tot)) and total arterial compliance (C(tot)). Inherent in this descri...
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ژورنال
عنوان ژورنال: Medical & Biological Engineering & Computing
سال: 2008
ISSN: 0140-0118,1741-0444
DOI: 10.1007/s11517-008-0359-2