What is Cholesterol?Cholesterol is a sterol (a combination steroid and alcohol). Cholesterol is a lipid found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. Because cholesterol is synthesized by all eukaryotes, trace amounts of cholesterol are also found in membranes of plants and fungi.The name originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as researchers first identified cholesterol in solid form in gallstones by Francois Poulletier de la Salle in 1769. However, it is only in 1815 that chemist Eugene Chevreul named the compound "cholesterine".[2]Most of the cholesterol is synthesized by the body and some has dietary origin. Cholesterol is more abundant in tissues which either synthesize more or have more abundant densely-packed membranes, for example, the liver, spinal cord and brain. It plays a central role in many biochemical processes, such as the composition of cell membranes and the synthesis of steroid hormones. Cholesterol is insoluble in blood, but is transported in the circulatory system bound to one of the varieties of lipoprotein, spherical particles which have an exterior composed mainly of water-soluble proteins. The main types, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) carry cholesterol from and to the liver.According to the lipid hypothesis, abnormally high cholesterol levels (hypercholesterolemia) and abnormal proportions of LDL and HDL are associated with cardiovascular disease by promoting atheroma development in arteries (atherosclerosis). This disease process leads to myocardial infarction (heart attack), stroke and peripheral vascular disease. As high LDL contributes to this process, it is termed "bad cholesterol", while high levels of HDL ("good cholesterol") offer a degree of protection. The balance can be redressed with exercise, a healthy diet, and sometimes medication. |
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Arterial blood pressure measurement with oscillometric Arterial blood pressure measurement with oscillometric instruments in newborns The signals used for the PTB simulator were obtained from three neonates DEVELOPMENT OF INDIRECT BLOOD PRESSURE SENSING TECHNIQUE FOR measurement of arterial blood pressure in the aerospace environment. BLOOD PRESSURE SENSING TECHNIQUE FOR AEROSPACE VEHICLE AND SIMULATOR USE. ScienceDirect - Computer Methods and Programs in Biomedicine Author Keywords: Blood pressure; Windkessel; Arterial properties; Simulation. Abbreviations: BP, blood pressure; AC, Arterial compliance; MBP, mean blood IngentaConnect Study of arterial blood pressure by a Windkessel Objective: to analyse the performance of a Windkessel blood pressure (BP) modeling Keywords: Blood pressure; Windkessel; Arterial properties; Simulation The development of a signal processing system for converting simulated arterial blood pressure. signal as input. In. the future, we. will. use tonometer. to. replace. simulation signal. The goal ofthis research is Wireless Continuous Arterial Blood Pressure Monitoring During nected to the same arterial line. 480. TECHNOLOGY, COMPUTING, AND SIMULATION. ˆYRI ET AL. ANESTH ANALG. WIRELESS BLOOD PRESSURE MONITORING. 2006;102:47883 DYNAMIC ARTERIAL BLOOD PRESSURE SIMULATOR - Patent 3868844 A dynamic arterial blood pressure simulator is disclosed comprising a pressure chamber, a flexible member in the wall of the chamber, a cam having a shape Science Links Japan | Development of an arterial blood pressure Development of an arterial blood pressure simulation model by a neural network Development of an arterial blood pressure simulation model by a neural Oscillometric non-invasive blood pressure simulator - US Patent 4 is a perspective view of a non-invasive blood pressure simulator in accordance 1, the arterial blood pressure waveform has four parameters that are of |
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