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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Value of non-invasive continuous blood pressure monitoring in the continuous blood pressure. monitoring in the detection of. carotid sinus hypersensitivity. Christopher J. Mathias cA'1"2, DPhil, FRCP, Assessment of the arterial tonometer (N-CAT) for the continuous An Accuracy Evaluation of the T-Line(R) Tensymeter (Continuous Noninvasive Blood Pressure Management Device) versus Conventional Invasive Radial Artery Accuracy of a continuous blood pressure monitor based on arterial A validation study of the continuous noninvasive tonometric blood pressure monitor called JENTOW was performed in 20 normotensive subjects and 10 Noninvasive continuous blood pressure measuring apparatus and a Noninvasive continuous blood pressure measuring apparatus and a method of noninvasively measuring continuous blood pressure - US Patent 6802815 from Patent Continuous Blood Pressure Monitoring Using Pulse Wave Delay Proposed paper is a part of a research to develop a convenient method for continuous monitoring of blood pressure by non-invasive and non-oscillometric way. (WO/2000/072750) CUFFLESS CONTINUOUS BLOOD PRESSURE MONITOR Most of the current noninvasive, continuous blood pressure measurement devices are mechanically intrusive and, therefore, cannot be used for long-term Continuous Blood Pressure Device (CBPD) The CBPD is a non-invasive continuous blood pressure measurement device that uses plethysmography and measures blood pressure at the finger according to the A CMOS-based tactile sensor for continuous blood pressure capability of recording continuous blood pressure data. The capacitive, membrane-based sensor device Thus the continuous recording of a blood pressure Continuous blood pressure monitoring system having a digital cuff A calibration system for a continuous blood pressure monitoring system using a tonometric sensor for continuously detecting a pulse wave comprises a digital Continuous blood pressure-derived cardiac output monitoring And so it seems that the field of continuous cardiac output estimation based on arterial blood pressure currently finds itself in a situation similar to IngentaConnect An evaluation of a new continuous blood pressure An evaluation of a new continuous blood pressure monitoring system in critically ill patients. Authors: Heard S.O.1; Lisbon A.; Toth I.; Ramasubramanian R. |
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