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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Electrocardiogram (ECG, EKG) Procedure and Results Information by High Blood Pressure: Medical information about hypertension, its treatment, therapies and EKG) procedure to test the electrical activity of the heart. High blood pressure (hypertension) - causes, treatments and Changes in total blood flow are reflected in heart rate and arterial pressure. Blood pressure can easily (though not continuously) be measured. Pulse, Blood Pressure, ECG If symptoms, such as shortness of breath or chest pain, become too uncomfortable or if significant abnormalities appear on the ECG or blood pressure Diagnosis: Symptoms and Diagnosis of Heart and Blood Vessel BUPA health factsheet - high blood pressure (hypertension) and its symptoms, the cause, available treatment and the risk related to the condition. High blood pressure - hypertension symptoms, cause, treatment and risk Blood pressure is measured before starting and at the end of each stage of exercise Systolic blood pressure should increase as the exercise level rises. Exercise ECG Testing - Patient UK Patient medical question and answer from The Heart Forum. Health topic area and articles about hypertrophy Topics: heart, cardiomyopathy, palpitations, Hypertrophy, High Blood Pressure, ekg, echo, etc Blood Vessels - The Heart - Heart Applet - Circulation Problems - Circulation Test - Links · Human Digestion · Human Excretion · Biology Forum blood pressure ecg The instrument is desigend to test any ECG equipment and invasive blood pressure monitor. Normal sinus rhythm is simulated with a choice of five selectable MicroSim 400 , ECG / Blood Pressure Simulator New and used medical equipment such as Blood Culture Analyzers, Bone Densitometers, We carry a large selection of portable and cart mounted EKG machines Medical Equipment, EKG Machines, Blood Culture Analyzers, and The system allows up to 4 channels of blood flow, 3 channels of blood pressure, ECG and temperature simultaneously. The system uses custom made 1mm diameter |
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