An arrhythmia is a problem with the speed or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. A heartbeat that is too fast is called tachycardia. A heartbeat that is too slow is called bradycardia. Most arrhythmias are harmless, but some can be serious or even life threatening. When the heart rate is too slow, too fast, or irregular, the heart may not be able to pump enough blood to the body. Lack of blood flow can damage the brain, heart, and other organs.
According to WHO statistics, stroke is the second most frequent cause of death worldwide. Cardiac causes account for up to 20% of strokes. Transcatheter occlusion of patent foramen ovale and left atrial appendage eliminate the most important sources for cardiac embolism.
Increased levels of physical activity are known today to be one of the most powerful protective factors against cardiovascular disease and its progression.
The American College of Chest Physicians (ACCP) has released the first evidence-based clinical practice guidelines for the prevention and management of postoperative atrial fibrillation (AF) after cardiac surgery.
The Research Foundation of SUNY, which supports the advancement of education, research and discovery at the State University of New York, today announced it signed a licensing agreement with Biosense Webster Inc. for the rights to an Upstate Medical University innovation that helps locate and treat life-threatening heart arrhythmias.
A new way to teach medical students will be demonstrated for the first time at Bristol University on 21 July 2005, during a joint meeting of the Physiological Society and the Federation of European Physiological Societies.
An asthma medicine widely used around the world to stop children's coughs has no provable benefit for that purpose and may cause harm, a new review of existing studies reports.
Atrial fibrillation is an irregular heartbeat (arrhythmia) in which the atria, or upper chambers of the heart, beat quickly and inconsistently.
Massachusetts General Hospital (MGH) researchers have shown that radiofrequency ablation (RFA) - a minimally invasive way of destroying tissue - is an effective, longlasting treatment for small kidney tumors in selected patients.
For heart patients who have surgically implanted defibrillators to shock their weakened hearts back into rhythm, fish oil supplements are not a good idea and in fact appear to do more harm than good.
Even though previous research has shown that fatty acids from fish oil reduce the risk of sudden cardiac death, patients with implantable defibrillators who took fish oil supplements did not see a reduction in serious heart rhythm abnormalities, according to a study in the June 15 issue of JAMA: The Journal of the American Medical Association.
Loyola University Health System is one of the first hospitals in the United States to employ new high-tech imaging software - in conjunction with a three-dimensional cardiac mapping and navigation system - to locate more accurately the abnormal electrical impulses that produce heart rhythm disturbances (arrhythmias). This technology represents a major breakthrough in treating complex arrhythmias.
Researchers from the Harvard School of Public Health and colleagues from Boston area medical institutions have linked short term high pollution concentrations with an increased incidence of irregular and very dangerous heart arrhythmias among a group of cardiac patients from the greater Boston area who had implanted cardioverter defibrillators (ICD).
As many as 15,000 sudden deaths each year in Europe and the U.S., may be caused by drugs commonly prescribed for psychiatric and gut disorders.
Non-cardiac drugs that interfere with the electrical activity controlling the heartbeat are associated with a three-fold risk of sudden cardiac death, according to Dutch research published (Wednesday 11 May) in Europe's leading cardiology journal, the European Heart Journal.
The research group of professor Manfred Kilimann at the Department of Cell and Molecular Biology has elucidated the genetic cause of a severe heart disease in newborn children. This result will be published in the June issue of the American Journal of Human Genetics this week.
In the best documented effort to date, researchers from the Howard Hughes Medical Institute at Children's Hospital Boston and Harvard Medical School have successfully induced adult heart-muscle cells to divide and multiply.
Among patients undergoing evaluation for coronary artery bypass surgery, stroke neurologists are frequently consulted when the patient also has severe carotid artery stenosis (blockage of an artery that supplies blood to the brain).
A first-of-its-kind multi-center trial has shown that cooling the body can have positive affects on children who suffered traumatic brain injury.
Among patients undergoing evaluation for coronary artery bypass surgery, stroke neurologists are frequently consulted when the patient also has severe carotid artery stenosis (blockage of an artery that supplies blood to the brain).
Taking daily supplements of fish or soy oil may improve cardiac function and protect against heart attacks in the short-term. Study results published in the April issue of CHEST, the peer-reviewed journal of the American College of Chest Physicians, are the first to show that soy oil increases heart rate variability (HRV), a measure of cardiac autonomic function.
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