Rising systolic blood pressure is the clearest indicator for increased risk of death compared to other blood pressure measurements, according to researchers at the Johns Hopkins Bloomberg School of Public Health. Their evaluation of blood pressure measurements and mortality risk found that diastolic and pulse pressure measurements were weaker indicators of mortality risk and their effect was more dependent on age and other factors. The study appears in the November 4, 2003, edition of the Annals of Internal Medicine.
Systolic pressure, which is the higher number and first number in a blood pressure reading, measures the force of blood in the arteries as the heart contracts to push blood through the body. Doctors consider a systolic blood pressure greater than 120 mm Hg (millimeters of mercury) as unhealthy and can lead to heart disease, stroke and vascular diseases of the legs. Diastolic pressure, the lower number, measures the pressure as the heart relaxes to fill with blood. A diastolic pressure greater than 80 mm Hg is also considered unhealthy. Pulse pressure is the difference between the diastolic and systolic readings.
"There is some controversy in the medical community over whether the monitoring of systolic, diastolic, or pulse pressure should be the focus in treating hypertension. Our study shows that an increased systolic reading is most closely associated with an increased risk of death," said lead investigator Eliseo Guallar, MD, DrPH, an assistant professor in the Schools Department of Epidemiology.
Laser activated gold pyramids could deliver drugs, DNA into cells without harm
24.03.2017 | Harvard John A. Paulson School of Engineering and Applied Sciences
What does congenital Zika syndrome look like?
24.03.2017 | University of California - San Diego
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
24.03.2017 | Materials Sciences
24.03.2017 | Physics and Astronomy
24.03.2017 | Physics and Astronomy