A small, portable device greatly increases the chance of surviving sudden cardiac death by restoring blood pressure better than conventional cardiopulmonary resuscitation, according to a Stanford University School of Medicine animal study. Following restoration of heart function, most of the animals in the Stanford study also showed no neurological damage, which commonly results from even a momentary blood flow interruption to the brain.
To model what happens during abrupt loss of heart function, the researchers tested the device, marketed as the AutoPulse Resuscitation System by Revivant Corp., on pigs. They found that AutoPulse contributed to the survival of three-quarters of the animals, while none of the animals initially treated with conventional CPR survived. "What was even more astounding than the survival rate was that 88 percent of the surviving animals had normal brain function," said Mehrdad Rezaee, MD, PhD, clinical science research associate in the Department of Cardiovascular Medicine and director of interventional preclinical research at Stanford. Results of the study are to be presented Nov. 10 at the American Heart Associations 76th annual Scientific Sessions in Orlando.
Although the AutoPulse is already commercially available in the United States, researchers wanted to investigate its overall effectiveness in reviving heart attack victims and also study its lasting benefit. Survival of a heart attack depends on maintaining blood flow to wash out the metabolic waste and move oxygenated blood to organs throughout the body. CPR is designed to artificially keep the blood flowing when the heart can no longer pump; the degree to which it is successful depends on how effectively CPR can squeeze, or compress, the chest wall surrounding the heart.
Mitzi Baker | EurekAlert!
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Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Hamburg and the European Molecular Biology Laboratory (EMBL) outstation in the city have developed a new method to watch biomolecules at work. This method dramatically simplifies starting enzymatic reactions by mixing a cocktail of small amounts of liquids with protein crystals. Determination of the protein structures at different times after mixing can be assembled into a time-lapse sequence that shows the molecular foundations of biology.
The functions of biomolecules are determined by their motions and structural changes. Yet it is a formidable challenge to understand these dynamic motions.
At the International Symposium on Automotive Lighting 2019 (ISAL) in Darmstadt from September 23 to 25, 2019, the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a provider of research and development services in the field of organic electronics, will present OLED light strips of any length with additional functionalities for the first time at booth no. 37.
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Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Potsdam (both in Germany) and the University of Toronto (Canada) have pieced together a detailed time-lapse movie revealing all the major steps during the catalytic cycle of an enzyme. Surprisingly, the communication between the protein units is accomplished via a water-network akin to a string telephone. This communication is aligned with a ‘breathing’ motion, that is the expansion and contraction of the protein.
This time-lapse sequence of structures reveals dynamic motions as a fundamental element in the molecular foundations of biology.
Two research teams have succeeded simultaneously in measuring the long-sought Thorium nuclear transition, which enables extremely precise nuclear clocks. TU Wien (Vienna) is part of both teams.
If you want to build the most accurate clock in the world, you need something that "ticks" very fast and extremely precise. In an atomic clock, electrons are...
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