In a study published in the June 19 online edition of the journal Nature, a scientific team led by researchers from the University of California, San Diego School of Medicine visually monitored the dynami ...
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(Medical Xpress)—Nitrous oxide—best known as laughing gas—is one of the world's oldest and most widely used anesthetics. Despite its popularity, however, experts have questioned its impact on the risk ...
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A higher strength of cholesterol-lowering drugs, or statins, did not increase the risk of kidney injury among heart attack survivors, according to preliminary research presented at the American Heart Association's Emerging ...
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Dawn triggers basic biological changes in the waking human body. As the sun rises, so does heart rate, blood pressure and body temperature. The liver, the kidneys and many natural processes also begin shifting ...
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(Medical Xpress)—University of Leicester scientists have discovered a potential genetic contributor to the increased risk of heart disease among men.
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When it comes to shopping for health care services, few publicly available tools help patients measure the best bang for their buck, according to a new study in the Journal of the American Medical Association (JAMA).
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Researchers have developed a risk assessment scoring system that they believe may better identify certain adults-– especially African Americans-– at high risk of developing type 2 diabetes, heart disease and stroke than ...
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(Medical Xpress)—The largest protein known to exist in the human body functions as a molecular spring, and University of Arizona researchers are gaining new insights into its role in heart disease.
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Fewer U.S. adults are smoking, a new government report says. Last year, about 18 percent of adults participating in a national health survey described themselves as current smokers.
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In a study of more than 2,000 adults, researchers found that two MRI measurements of the abdominal aorta—the amount of plaque in the vessel and the thickness of its wall—are associated with future cardiovascular events, ...
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Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, results from the interruption of blood supply to a part of the heart, causing heart cells to die. This is most commonly due to occlusion (blockage) of a coronary artery following the rupture of a vulnerable atherosclerotic plaque, which is an unstable collection of lipids (cholesterol and fatty acids) and white blood cells (especially macrophages) in the wall of an artery. The resulting ischemia (restriction in blood supply) and ensuing oxygen shortage, if left untreated for a sufficient period of time, can cause damage or death (infarction) of heart muscle tissue (myocardium).
Classical symptoms of acute myocardial infarction include sudden chest pain (typically radiating to the left arm or left side of the neck), shortness of breath, nausea, vomiting, palpitations, sweating, and anxiety (often described as a sense of impending doom). Women may experience fewer typical symptoms than men, most commonly shortness of breath, weakness, a feeling of indigestion, and fatigue. Approximately one-quarter of all myocardial infarctions are "silent", that is without chest pain or other symptoms.
Among the diagnostic tests available to detect heart muscle damage are an electrocardiogram (ECG), echocardiography, cardiac MRI and various blood tests. The most often used blood markers are the creatine kinase-MB (CK-MB) fraction and the troponin levels. Immediate treatment for suspected acute myocardial infarction includes oxygen, aspirin, and sublingual nitroglycerin.
Most cases of STEMI (ST elevation MI) are treated with thrombolysis or percutaneous coronary intervention (PCI). NSTEMI (non-ST elevation MI) should be managed with medication, although PCI is often performed during hospital admission. In people who have multiple blockages and who are relatively stable, or in a few emergency cases, bypass surgery may be an option, especially in diabetics.
Heart attacks are the leading cause of death for both men and women worldwide. Important risk factors are previous cardiovascular disease, older age, tobacco smoking, high blood levels of certain lipids (triglycerides, low-density lipoprotein) and low levels of high density lipoprotein (HDL), diabetes, high blood pressure, obesity, chronic kidney disease, heart failure, excessive alcohol consumption, the abuse of certain drugs (such as cocaine and methamphetamine), and chronic high stress levels.
This text uses material from Wikipedia licensed under CC BY-SA
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