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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High Blood Pressure (Hypertension) - Symptoms, Causes, Diagnosis Blood pressure is measured with a blood pressure cuff and recorded as two numbers, such as 120/80 mm Hg (millimeters of mercury). How Is Blood Pressure Measured? Find out how a blood pressure cuff works, and how your doctor uses it to check your blood pressure. How is Blood Pressure Measured? There are several ways to measure blood pressure. Here are explanations of the most common methods. Blood Pressure Testing and Measurement Blood pressure is measured by a quick, painless test using a medical instrument called a sphygmomanometer (SFIG'mo-mah-NOM'eh-ter). Blood Pressure Measurement - How Blood Pressure is Measured Blood pressure is measured with two different noninvasive techniques, a manually performed technique known as auscultation and an automated technique known Journal of Human Hypertension - Prognostic significance of blood Prognostic significance of blood pressure measured in the office, at home and during ambulatory monitoring in older patients in general practice How often should blood pressure be measured in healthy pregnant How often should blood pressure be measured in healthy pregnant women and when is the best time to do this? Record type, Uncertainties identified in Blood Pressure Testing and Measurement - NYU Medical Center, NYU In adults, blood pressure is typically (but not always) measured during each visit to the doctor. It is not routinely measured in children, unless there is The New York Times > Health > 'Normal' Blood Pressure May Still Be Blood pressure is measured in millimeters of mercury. National guidelines for most people say systolic pressure, when the heart contracts, should be lower IngentaConnect Comparison of Blood Pressure Measured by In previous studies, oscillometric blood pressure measured from the supraorbital artery has been shown to agree quite well with pressure measured from the WikiAnswers - What is blood pressure measured in How is hogh blood pressure measured? Pressure is measured by? What unit is blood pressure measured in? About · Browse · Advanced Search · How to Contribute Discovery Health :: Center Article :: How Is Blood Pressure Measured? For instance, a systolic pressure of 130 and a diastolic pressure of 75 is written as 130/75 and read as 130 over 75. Blood pressure is measured in How to measure blood pressure correctly and get accurate blood The aim of treatment for high blood pressure is to reduce it, when measured by your doctor or nurse, to below 140/85mmHg. When it is measured in a clinic, Blood pressure - how is it measured? - Everybody - Health How does a doctor or other health professional measure your blood pressure? What Is High Blood Pressure? High blood pressure is a blood pressure reading of 140/90 mmhg or higher. mmHg (measured in millimeters of mercury, a unit for measuring pressure). Measuring Blood Pressure, what the numbers mean. If you have high blood pressure, how often you need to be measured will depend When you have your blood pressure measured, it is written down as two How is Blood Pressure Measured? Blood pressure is measured in millimeters of mercury (mm Hg). A typical normal blood pressure is 120/80 mm Hg, or 120 over 80. The first number represents Blood pressure - Wikipedia, the free encyclopedia âœDon't drink coffee or smoke cigarettes 30 minutes before having your blood pressure measured. Before the test, sit for 5 minutes with your back supported Blood pressure measurement How is blood pressure measured? To take a blood pressure reading, you need to be relaxed and comfortably seated, with your arm well supported. |
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