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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Blood pressure - Wikipedia, the free encyclopedia Listening with the stethoscope to the brachial artery at the elbow, the examiner slowly releases the pressure in the cuff. When blood just starts to flow in MedlinePlus Medical Encyclopedia: Blood pressure All you need to perform a blood pressure measurement is a cuff and a device for detecting the pulse in the artery (stethoscope or microphone). High blood pressure: Get the most out of home monitoring Stethoscope. Some blood pressure monitors come with a stethoscope. It's used to listen to the sounds your blood makes as it flows through the brachial Nursing Scrubs - Nursing Uniforms & Medical Supplies at AllHeart.com AllHeart Sprague Stethoscope on Sale only $8.49 · AllHeart Blood Pressure Aneroid and Dual Head Stethoscope Combination Set Blood Pressure Monitoring at Home -- familydoctor.org This blood pressure monitoring device is good for hearing-impaired patients, since there is no need to listen to heart sounds through the stethoscope. Welch Allyn blood pressure units and stethoscope kits from Redding Baby Phat Shoes, Baby Phat Tees, Bath Seats, BCI Pulse Oximeters, Blood Pressure and Stethoscope Ki Blood Pressure Parts for LXI, Body Fat Analyzer Redding Medical supplies Littmann stethoscopes and Welch Allyn We have worked closely with Littman to provide high quality stethoscope and blood pressure units for your hospital or lab. Our first products were earlier Stethoscope - Nebulizer - Blood pressure monitors - Otoscope Offers stethoscope, nebulizer, blood pressure monitors, otoscope, pedometer, heart rate monitors at wholesale price. Education: How to use a stethoscope However, a good quality stethoscope is important. The thin tubed variety found on most wards is adequate for measurement of blood pressure but is not Stethoscopes, otoscopes and blood pressure measurement instruments Supplies stethoscopes and other portable and ambulatory healthcare diagnostic equipment. Taking a blood pressure 2. Stethoscope. It would be helpful if someone who knows how to take a blood pressure is present to supervise, as the technique requires some practice. |
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