People who have heart attacks or other heart conditions who do not experience chest pain are commonly overlooked and undertreated at the hospital, often resulting in greater fatality rates in this group of patients. A new study in the August issue of CHEST, the peer-reviewed journal of the American College of Chest Physicians, shows that cardiac patients presenting to the hospital without chest pain have triple the death rate of other cardiac patients and are less likely to receive medications to slow the progression of a heart attack.
“While the majority of people who have acute coronary syndromes, such as heart attacks and unstable angina, feel chest pain, some do not, but, instead, may experience atypical symptoms of fainting, shortness of breath, excessive sweating, or nausea and vomiting” said the study’s lead author, David Brieger, MBBS, PhD, Concord Hospital, Sydney, Australia. “Other than excessive sweating, each of the dominant symptoms of a heart attack not accompanied by chest pain independently identifies a population that is at increased risk of dying.”
A group of international researchers analyzed data from the Global Registry of Acute Coronary Events (GRACE), a registry of 20,881 patients from 14 countries, including the United States, Canada, Australia, Great Britain, and France. These patients were hospitalized with a variety of heart conditions from July 1999 to June 2002. Of the 1,763 cardiac patients who did not experience chest pain, 13 percent died in the hospital compared to 4.3 percent of those with chest pain. In addition, 23.8 percent of patients without chest pain were initially misdiagnosed when they arrived at the hospital, compared to only 2.4 percent of heart patients who experienced typical symptoms. Patients without chest pain tended to be older women and to have a history of diabetes, heart failure, or hypertension, as opposed to patients with chest pain who were more likely to be smokers with plaque buildup in their coronary arteries. Patients with atypical symptoms were also more likely to have the unfavorable outcomes of heart failure, cardiogenic shock, arrhythmias, and renal failure.
Speed data for the brain’s navigation system
06.12.2016 | Deutsches Zentrum für Neurodegenerative Erkrankungen e.V. (DZNE)
Study suggests possible new target for treating and preventing Alzheimer's
02.12.2016 | Oregon Health & Science University
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
07.12.2016 | Earth Sciences
07.12.2016 | Earth Sciences
07.12.2016 | Materials Sciences