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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Medinfo: Hypertension (high blood pressure) A person's blood pressure alters from minute to minute. It goes up under stress as well as on exercise. Thus a blood pressure (BP) reading taken by the HIGH BLOOD PRESSURE (HYPERTENSION) High blood pressure (hypertension) is a blood pressure reading of 140/90 mmHg . Blood pressure readings are usually taken when you are sitting or lying How to Measure Blood Pressure Blood pressure readings taken at home are often lower than those taken at a . When and how often you take readings will depend on your blood pressure. Blood Pressure Readings: Blood Pressure Machines for Measuring Blood pressure readings with CSI Model 3K blood pressure machines are an accurate, fast and non-invasive way of measuring blood pressure. High Blood Pressure - Things you can do to help lower yours A healthy adult with a blood pressure of less than 120 over 80 is at less risk for getting some health problems over the long run. A blood pressure reading How to measure blood pressure correctly and get accurate blood Measuring your blood pressure needs to give accurate readings if it is to be Blood pressure readings taken at home are often lower than those taken at a AMNews: June 11, 2007. Blood pressure readings often unreliable While assessment increasingly occurs outside the office, efforts continue to improve clinician determination of the readings. What Is Normal Blood Pressure? If your doctor says you have a high blood pressure reading the first time, don't panic. Blood pressure can vary due to exercise or your body's response to My Blood Pressure Charting Software -- Free Download Software that records, charts and prints reports of your blood pressure readings WIN 98/ME/2000/XP Blood Pressure Monitoring at Home -- familydoctor.org Blood pressure readings will be wrong if your cuff is the wrong size. Look at the display window to see your blood pressure reading. MedlinePlus Medical Encyclopedia: Blood pressure Blood pressure readings are measured in millimeters of mercury (mmHg) and usually given as 2 The bottom number is the diastolic blood pressure reading. High Blood Pressure (Hypertension) - Texas Heart Institute Heart Your doctor will take several blood pressure readings using a device called a Blood pressure readings measure the two parts of blood pressure: systolic High Blood Pressure (Hypertension) - Patient UK A one-off blood pressure reading that is high does not mean that you have 'high blood pressure'. Your blood pressure varies throughout the day. Blood pressure - Wikipedia, the free encyclopedia For blood pressure readings taken with a home monitoring device to be accurate, they should be taken the same way each time. The National Heart, Lung and Blood Pressure Readings A complete explanation of Blood Pressure Readings including risks, what to expect and when to call the doctor. Measuring Blood Pressure, what the numbers mean. If your blood pressure is on the high side of 'normal' (between 130/85 and 139/89 mmHg) or if you have had a previous high reading at anytime before, Blood pressure: A chart explaining your blood pressure reading Blood pressure readings are grouped into four categories. This chart explains the readings. Blood Pressure Readings - What They Mean Find out how the numbers in your blood pressure readings measure your risk for heart attack and other damage. What Is High Blood Pressure? High blood pressure is a blood pressure reading of 140/90 mmhg or higher. For example, blood pressure readings of 138/82, 128/89, or 130/86 are all in |
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