By Gaetano D Gargiulo; Alistair McEwan
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Additional info for Advanced biomedical engineering
Two of the leading causes of death in the developed world in nowadays, myocardial infarction and stroke, are a direct consequence of atherosclerosis. Arterial stiffness is an indicator of increased cardiovascular disease risk. Among many new methods applied to detect arterial stiffness, pulse wave monitoring is a rapidly developing one. Arterial pulse is one of the most fundamental life signals in medicine, which has been used since ancient time. With the help of new information technology, pulse wave analysis has been utilized to detect many aspects of heart diseases especially the ones involving arterial stiffness.
Lower frequencies and higher frequencies get bigger values and the slop goes smoothly from negative to positive. The peak value at lower frequency side is almost 50% bigger than the peak value at higher frequency side. The data become inconspicuous for frequencies between10 and 190 Hz. The higher values in time domain will result in the higher value in frequency domain. Fig. 6. Fourier Transform for a typical pulse waveform Patients with old myocardial infarction often have obtuse systolic component and weak diastolic component due to the abnormal cardiac function.
255-276, Allyn and Bacon, Boston. 2 Pulse Wave Analysis Zhaopeng Fan, Gong Zhang and Simon Liao University of Winnipeg Canada 1. Introduction Cardiovascular refers to the Cardio (heart) and vascular (blood vessels). The system has two major functional parts: central circulation system and systemic circulation system. Central circulation includes the pulmonary circulation and the heart from where the pulse wave is generated. Systemic circulation is the path that the blood goes from and to the heart.