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Topic: High pressure


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  High Pressure Centers: also known as anticyclones
A high pressure center is where the pressure has been measured to be the highest relative to its surroundings.
A high pressure center is represented on a weather map by a blue H. Winds flow clockwise around the high in the northern hemisphere.
Sinking air in the vicinity of a high pressure center tends to suppress the upward motions required for the clouds and precipitation to develop, which is why fair weather is commonly associated with an area of high pressure.
ww2010.atmos.uiuc.edu /(Gh)/guides/mtr/prs/hghdef.rxml   (134 words)

  
 MedlinePlus Medical Encyclopedia: High blood pressure   (Site not responding. Last check: 2007-10-08)
Blood pressure is measured in millimeters of mercury (mm Hg).
High blood pressure occurs more often in men than in women, and in African Americans almost twice as often as in Caucasians.
High blood pressure that results from a specific condition, habit, or medication is called secondary hypertension.
www.nlm.nih.gov /medlineplus/ency/article/003082.htm   (739 words)

  
 What Is High Blood Pressure?
Blood pressure is the force in the arteries when the heart beats (systolic pressure) and when the heart is at rest (diastolic pressure).
High blood pressure (or hypertension) is defined in an adult as a blood pressure greater than or equal to 140 mm Hg systolic pressure or greater than or equal to 90 mm Hg diastolic pressure.
High blood pressure directly increases the risk of coronary heart disease (which leads to heart attack) and stroke, especially when it's present with other risk factors.
www.americanheart.org /presenter.jhtml?identifier=2112   (241 words)

  
 NMRFAM Research: High-Pressure NMR   (Site not responding. Last check: 2007-10-08)
H NMR spectra of the histidines of RNase A as a function of pressure, from 0 to 4.2 kbar.
Pressure is a thermodynamic variable of interest for protein structural and functional studies because of its importance to the standard volume change upon protein denaturation.
Three high pressure (1 bar to 4.2 kbar), high resolution NMR probes of the same basic design were designed, constructed, and tested for high pressure NMR studies of proteins at a magnetic field of 9.4 Tesla (proton resonance frequency of 400.13 MHz).
www.nmrfam.wisc.edu /Research/pressure.html   (560 words)

  
 Heartpoint: High Blood Pressure Information
The actual mechanisms which explain why the blood pressure is high has to do mainly with the constriction of the small arterioles which are in all of the tissues of the body.
Blood pressure is generally felt to be abnormally high at a level of 140/90, and some sort of definitive therapy and follow-up should be started at this level.
The other danger is that the high reading taken in the doctor’s office is assumed to be the patient’s usual blood pressure, and he or she is overtreated.
www.heartpoint.com /highbloodpage.html   (2833 words)

  
 High Blood Pressure (Hypertension)
The pressure is higher when your heart contracts and lower when it relaxes; but there's always a certain amount of pressure in the arteries.
Blood pressure is measured as air is gradually let out of the cuff, which allows blood to begin to flow through the artery again when the blood pressure in the artery is greater than the pressure in the cuff.
The diastolic pressure (the pressure when the heart is resting between beats) is noted when the sounds disappear.
kidshealth.org /parent/medical/heart/hypertension.html   (830 words)

  
 High blood pressure (hypertension)
Blood pressure is determined by the amount of blood your heart pumps and the amount of resistance to blood flow in your arteries.
High blood pressure in children, more often than in adults, indicates that something else is wrong, and the increase in blood pressure is a sign of an underlying condition.
High blood pressure is a risk factor for both types of stroke — ischemic stroke and hemorrhagic stroke.
www.cnn.com /HEALTH/library/DS/00100.html   (3650 words)

  
 Medindia - High blood pressure Introduction   (Site not responding. Last check: 2007-10-08)
High blood pressure (hypertension) is often called the silent killer because you can have it for years without knowing it.
High blood pressure or hypertension means high pressure (tension) in the arteries.
Blood pressure is typically recorded as the systolic pressure (as the heart beats) over the diastolic pressure (as the heart relaxes between beats).
www.medindia.net /Patients/PatientInfo/hypertension.asp   (239 words)

  
 High Blood Pressure   (Site not responding. Last check: 2007-10-08)
High blood pressure is the number one risk factor for congestive heart failure, a serious condition where the heart is not able to pump enough blood to meet the body's needs.
Blood pressure is a measure of the force of blood pumped from the heart against the walls of your arteries (or blood vessels).
Blood pressure is read as two numbers: a top number (systolic pressure), or the pressure of blood in the vessels as the heartbeats; and a bottom number (diastolic pressure), or the pressure of the blood between heartbeats.
www.4woman.gov /faq/bloodpress.htm   (2983 words)

  
 High Blood Pressure
High stress lifestyle, smoking, and high salt diet all contribute to this potentially dangerous condition and virtually everyone in the U.S. knows how serious it can be.
The pressure would cause the garden hose to explode and that is what happens to a blood vessel too small for the pressure going through it.
High blood pressure also increases the risk of “embolism:” the formation of tiny abnormal blood clots that form when blood flow is normal and can lodge in an assortment of inopportune locations including the brain.
www.marvistavet.com /html/body_high_blood_pressure.html   (1025 words)

  
 UMHS - Dangers of High Blood Pressure   (Site not responding. Last check: 2007-10-08)
High blood pressure means that your heart is working harder than normal to force blood into the arteries and through the circulatory system.
When untreated, high blood pressure can lead to heart failure, stroke, kidney damage, and loss of vision from damage to the retina at the back of the eye.
High blood pressure has no symptoms, so it is very important to have it checked regularly and closely follow the treatment plan recommended by your doctor.
www.med.umich.edu /1libr/heart/highbp03.htm   (383 words)

  
 High blood pressure (hypertension) - causes, treatments and medications
High blood pressure does not mean excessive emotional tension, although emotional tension and stress can temporarily increase the blood pressure.
The systolic blood pressure, which is the top number, represents the pressure in the arteries as the heart contracts and pumps blood into the arteries.
The diastolic pressure, which is the bottom number, represents the pressure in the arteries as the heart relaxes after the contraction.
www.medicinenet.com /high_blood_pressure/article.htm   (626 words)

  
 High Blood Pressure   (Site not responding. Last check: 2007-10-08)
Whether blood pressure is high, low, or normal depends on several factors: the output from the heart, the resistance to blood flow of the blood vessels, the volume of blood, and blood distribution to the various organs.
Because high blood pressure usually causes no symp­toms until complications develop, it is known as the “silent killer.” Warning signs associated with advanced hyperten­sion may include headaches, sweating, rapid pulse, short­ness of breath, dizziness, and visual disturbances.
When persistently elevated blood pressure arises as a i suit of another underlying health problem, such as a monal abnormality or an inherited narrowing of the aorta it is called secondary hypertension.
www.glennburkett.com /high_blood_pressure1.htm   (1222 words)

  
 High Pressure   (Site not responding. Last check: 2007-10-08)
High pressure is not a specialised tool—it is vital to fields ranging from geophysics to optoelectronics, from polymers to the production of vaccines [1].
Diamond anvil cells (DACs) enable pressures up to and exceeding the pressure at the centre of the earth to be established and studied at leisure in the laboratory.
An interesting but unexplained result that we found that the band-gap pressure coefficients of strained layers is much lower than expected (10% low for 1.4% strain) when they are grown in the (001) orientation [5, 6] but not in the (111) orientation [6].
mmpwww.ph.qmw.ac.uk /pressure.html   (597 words)

  
 High Blood Pressure   (Site not responding. Last check: 2007-10-08)
High blood pressure is a serious health problem that affects 35 million Americans or one out of every six people.
Your blood pressure is the measurement of the pressure of blood pushing against the walls of your blood vessels as it is pumped through your body.
High blood pressure will go away after the baby is born for most women.
obgyn.uihc.uiowa.edu /Patinfo/pregprob/hyper10n.htm   (687 words)

  
 High Blood Pressure   (Site not responding. Last check: 2007-10-08)
High systolic blood pressure (the first and higher number) appears to be a significant indicator for heart complications, including death, in all ages, but especially in middle-aged and older adults.
High diastolic pressure (the second and lower number) is a strong predictor of heart attack and stroke in young adults and in people of any age with essential hypertension.
High blood pressure was responsible for nearly 43,000 American deaths in 1999 and was listed as the primary or contributing cause of death in an estimated 227,000 cases.
www.reutershealth.com /wellconnected/doc14.html   (10440 words)

  
 High blood pressure [1]
Blood pressure is determined by the amount of blood pumped by the heart, and the size and condition of the arteries.
These may be a sign of dangerously high blood pressure (called malignant hypertension) or a complication from high blood pressure.
Even if you have not been diagnosed with high blood pressure, it is important to have your blood pressure checked at annual exams, especially if you have a history of high blood pressure in your family.
www.dental.am /more/13061_0_14_0_C   (704 words)

  
 USATODAY.com   (Site not responding. Last check: 2007-10-08)
High pressure systems usually form where the air converges aloft.
As the air converges in the upper-levels of the atmosphere, it forms an area of higher pressure and is forced to sink.
High pressure systems are steered by upper-level winds much the same way low pressure systems are steered.
www.usatoday.com /weather/tg/whighp/whighp.htm   (226 words)

  
 High Blood Pressure   (Site not responding. Last check: 2007-10-08)
However, there is a range of "normal" blood pressure reading.
If either or both numbers are equal to or greater than 140 over 90 for an extended period of time, you have high blood pressure, or hypertension.
High blood pressure also causes damage to the arteries, causing arterial disease.
sln2.fi.edu /biosci/healthy/pressure.html   (167 words)

  
 High Blood Pressure - Age Page - Health Information
But, high blood pressure, sometimes called “the silent killer,” is a major health problem.
If your blood pressure is normal, your systolic pressure is less than 120 and your diastolic pressure is less than 80—for example, 119/79.
Your doctor will say your blood pressure is high when it measures 140/90 or higher at two or more checkups.
www.niapublications.org /engagepages/hiblood.asp   (1006 words)

  
 High Blood Pressure
This is true for both high blood pressure and low blood pressure.
Sometimes the principle cause of the blood pressure problems is one or more unresolved emotional issues such as anger, fear, guilt or trauma.
Even though this reading was high, it was actually good for her because, during the previous week, it had reached 196/116.
www.emofree.com /blood-pressure.htm   (607 words)

  
 High Blood Pressure (Hypertension)
Blood pressure is dependent on output from the heart, blood vessel flexibility and resistance to blood flow, volume of blood, and blood distribution to organs.
Over 80% of high blood pressure patients are in the moderate problem range, and can bring their blood pressure under control through changes in diet and lifestyle instead of drugs.
Since 50% of high blood pressure patients are borderline-to-mild hypertensive, the changeover of these patients to nondrug options could mean a loss of more than five billion dollars to the drug companies each year.
www.healingwithnutrition.com /cdisease/cardiovascular/hypertension.html   (351 words)

  
 Hypertension (High Blood Pressure)
Blood pressure is the pressure your blood exerts against your blood vessel walls as your heart pumps.
Blood pressure rises with each heartbeat and falls when the heart relaxes between beats, but there is always a certain amount of pressure in the arteries.
Blood pressure is measured in millimeters of mercury (written as mm Hg).
kidshealth.org /teen/diseases_conditions/heart/hypertension.html   (490 words)

  
 Screening: High Blood Pressure   (Site not responding. Last check: 2007-10-08)
Rationale: The USPSTF found good evidence that blood pressure measurement can identify adults at increased risk for cardiovascular disease due to high blood pressure, and good evidence that treatment of high blood pressure substantially decreases the incidence of cardiovascular disease and causes few major harms.
The USPSTF concludes that the evidence is insufficient to recommend for or against routine screening for high blood pressure in children and adolescents to reduce the risk of cardiovascular disease.
Rationale: The USPSTF found poor evidence that routine blood pressure measurement accurately identifies children and adolescents at increased risk for cardiovascular disease, and poor evidence to determine whether treatment of elevated blood pressure in children or adolescents decreases the incidence of cardiovascular disease.
www.ahrq.gov /clinic/uspstf/uspshype.htm   (191 words)

  
 Symptom - High blood pressure - Detroit, Michigan
For high blood pressure caused by essential hypertension or if you have prehypertesion, a proper diet, weight loss, exercise, and salt and alcohol reduction are often recommended.
Your blood pressure should be checked routinely by your health care provider if you are over the age of 40, obese, smoke, drink alcohol regularly, or have a family history of high blood pressure.
The blood pressure may need to be monitored several times over a period of weeks or months.
www.henryfordhealth.org /13903.cfm   (674 words)

  
 High Blood Pressure Foundation :: home   (Site not responding. Last check: 2007-10-08)
High blood pressure really is a silent killer.
To improve the basic understanding, assessment, treatment and public awareness of high blood pressure, and, in so doing, help promote the welfare of people with high blood pressure.
The Foundation tries to keep administrative costs to a minimum, which means that your donation is put to very good use for our important research and educational programmes.
www.hbpf.org.uk   (108 words)

  
 High blood pressure
Hypertension (high blood pressure) is when your blood pressure frequently goes over 140/90.
Essential hypertension (hypertension with no known cause) is not fully understood, but accounts for between 90-95% of all hypertension cases in people over 45 years of age.
Even though many times high blood pressure does not have a known cause, the condition can still be treated effectively with both lifestyle modification and medications.
www.healthcentral.com /mhc/top/003082.cfm   (399 words)

  
 The European High Pressure Research Group (EHPRG)
Back in 1963, a group of scientists and engineers involved in high pressure research decided to meet on an annual basis.
The reasonable size of the group, the selection of the topics, the quality of the meetings, the low conference fees and the friendly relationships between the attendants have made the EHPRG meetings attractive.
High pressure research is a fast growing discipline, yielding interesting and exciting results in many fields of science, technology and biotechnology.
www.ehprg.org   (96 words)

  
 High Pressure Hose, Flexible & Teflon Hose Manufacturer - Senior Flexonics
High Pressure Hose, Flexible & Teflon Hose Manufacturer - Senior Flexonics
US Hose Corporation (formerly Senior Flexonics) is the only North American flexible and high pressure hose manufacturer to offer three product ranges under one roof.
You can find high pressure hose, flexible metal hoses, Teflon hoses, and more.
www.ushosecorp.com   (121 words)

  
 Abbott Diagnostics - High Blood Pressure
But sustained high blood pressure is extremely serious because of its long-term effect on important body organs.
High blood pressure most often affects individuals over age 35, but it can occur at any age.
Up to age 50, men are more likely than women to develop high blood pressure, although statistics for women increase after menopause.
www.abbottdiagnostics.com /Your_Health/Heart_Disease/hypertension.cfm   (1036 words)

  
 High Blood Pressure
According to recent estimates, nearly one in three U.S. adults has high blood pressure, but because there are no symptoms, nearly one-third of these people don't know they have it.
Uncontrolled high blood pressure can lead to stroke, heart attack, heart failure or kidney failure.
This is why high blood pressure is often called the "silent killer." The only way to tell if you have high blood pressure is to have your blood pressure checked.
www.americanheart.org /presenter.jhtml?identifier=2114   (319 words)

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