High Blood Pressure

New implantable device eases sleep apnea

Mike Freeman's backpacking buddies did not want their tents near his, and his wife was tired of waking in the middle of the night to get him to roll over and stop snoring. Mike has sleep apnea, a pretty dramatic case, he ...

Jun 06, 2016
popularity107 comments 1

A urine test to diagnose preeclampsia

A team of scientists from the Moscow Institute of Physics and Technology and partners have developed a method of non-invasive testing for pregnant women with preeclampsia by detecting potential biomarkers in the urine of ...

Jun 01, 2016
popularity7 comments 0

Hypertension (HTN) or high blood pressure, sometimes arterial hypertension, is a chronic medical condition in which the blood pressure in the arteries is elevated. This requires the heart to work harder than normal to circulate blood through the blood vessels. Blood pressure involves two measurements, systolic and diastolic, which depend on whether the heart muscle is contracting (systole) or relaxed (diastole) between beats. Normal blood pressure is at or below 120/80 mmHg. High blood pressure is said to be present if it is persistently at or above 140/90 mmHg.

Hypertension is classified as either primary (essential) hypertension or secondary hypertension; about 90–95% of cases are categorized as "primary hypertension" which means high blood pressure with no obvious underlying medical cause. The remaining 5–10% of cases (secondary hypertension) are caused by other conditions that affect the kidneys, arteries, heart or endocrine system.

Hypertension is a major risk factor for stroke, myocardial infarction (heart attacks), heart failure, aneurysms of the arteries (e.g. aortic aneurysm), peripheral arterial disease and is a cause of chronic kidney disease. Even moderate elevation of arterial blood pressure is associated with a shortened life expectancy. Dietary and lifestyle changes can improve blood pressure control and decrease the risk of associated health complications, although drug treatment is often necessary in patients for whom lifestyle changes prove ineffective or insufficient.

This text uses material from Wikipedia licensed under CC BY-SA

Latest Spotlight News

Beneficial bacteria may protect breasts from cancer

Bacteria that have the potential to abet breast cancer are present in the breasts of cancer patients, while beneficial bacteria are more abundant in healthy breasts, where they may actually be protecting women from cancer, ...

Beyond the sweetness of sugar

We all know the nutritional "evils" of sugar as a potential cause of obesity, chronic disease and death, through to being a potentially brain damaging substance.

Real life brain studies: 3D brain-on-a-chip

To study brain cell's operation and test the effect of medication on individual cells, the conventional Petri dish with flat electrodes is not sufficient. For truly realistic studies, cells have to flourish within three-dimensional ...

Faster detection of pathogens in the lungs

What used to take several weeks is now possible in two days: Thanks to new molecular-based methods, mycobacterial pathogens that cause pulmonary infections or tuberculosis can now be detected much more quickly. Time-consuming ...