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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ACOG Education Pamphlet AP034 -- High Blood Pressure During Pregnancy Because of the normal ups and downs in blood pressure, if you have one high reading, another reading may be taken again later to see if it is your normal High Blood Pressure During Pregnancy - March of Dimes A systolic reading of 140 or higher, or a diastolic reading of 90 or higher, is considered high blood pressure. Because blood pressure can go up and down Blood Pressure - High - Low - Information 140/90 is the level used to diagnose high blood pressure. If your blood pressure reading is consistently 140/90 or above this is considered high blood Heartpoint: High Blood Pressure Information First of all, several readings are required to diagnose High Blood Pressure. Blood pressure is generally felt to be abnormally high at a level of 140/90, Blood pressure - Wikipedia, the free encyclopedia Hypertension refers to arterial pressure being abnormally high, . For blood pressure readings taken with a home monitoring device to be accurate, Hypertension (High Blood Pressure) A borderline high systolic pressure of 120 to 139 or a diastolic pressure of 80 to 89 needs to be closely monitored. A blood pressure reading equal to or Blood Pressure Guide To know what is the cause of high blood pressure, it is important to assay with various ailments who need to take their blood pressure readings on daily Blood Pressure Testing and Measurement The only way to find out if you have high blood pressure is to have your blood blood pressure reading for an adult might be 118/78 mm Hg, but readings Blood Pressure Monitoring at Home -- familydoctor.org What does my blood pressure reading mean? Normal blood pressure is 120/80 or lower. High blood pressure is 140/90 or higher. If your blood pressure is 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, HIGH BLOOD PRESSURE (HYPERTENSION) High blood pressure (hypertension) is a blood pressure reading of 140/90 mmHg or . A diagnosis of high blood pressure is given if repeated readings are High Blood Pressure: Heart and Blood Vessel Disorders: Merck If a person has an initial high reading, blood pressure is measured again The readings determine not only whether high blood pressure is present but The Kidney Foundation - High Blood Pressure & Your Kidneys High blood pressure is also called hypertension. It is defined as blood pressure readings greater than 140/90 mm Hg*. In people with diabetes, High blood pressure (hypertension) A typical normal blood pressure reading would be 120/80 mmHg. What's classed as high? There is a natural tendency for blood pressure to rise with age due to Blood Pressure A single elevated blood pressure reading doesn't mean you have high blood pressure, but it's a sign that further observation is required. Healthy Hearts: Hypertension/High Blood Pressure - The Human Heart There is no "ideal" blood pressure reading. However, there is a range of for an extended period of time, you have high blood pressure, or hypertension. 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. What Are High Blood Pressure and Prehypertension? Systolic pressure is the force of blood in the arteries as the heart beats. It is shown as the top number in a blood pressure reading. High blood pressure What Is High Blood Pressure? If you are being treated for high blood pressure and have repeated readings in the normal range, you still have high blood pressure. |
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