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.
While adverse reactions from smallpox vaccinations given to military personnel in the wake of renewed threats of bioterrorism remain minimal, the rate of cardiac complications has been higher than expected, according to a clinical review presented at an American Medical Society media briefing on cardiology today.
However, surgical correction of certain forms of congenital heart disease may not fix the underlying molecular trigger that drives progressive heart failure and sudden death later in life, according to new research from the University of California, San Diego (UCSD) School of Medicine.
Hip fracture patients should be operated on within 24 hours of hospital admission because it reduces pain, shortens hospital stays and may limit the probability of major complications occurring, such as pneumonia and arrhythmias, according to the authors of a new study supported by the Agency for Healthcare Research and Quality.
Heart researchers at Columbia University Medical Center have developed and tested a unique heart arrhythmia drug that could prevent the sudden death of millions of people with heart failure as well as people with an inherited heart disorder. The drug represents one of the first molecular-based therapies for heart failure and avoids the toxicity of current treatments.
Researchers at Loyola University Health System, Maywood, Ill., and the University of Rochester Medical Center, Rochester, N.Y., found that the previously demonstrated survival benefit of ICDs following a heart attack can last up to 15 years.
Surgery to cut part of the nerves to the heart can reduce the risk of fainting or sudden death in young people with a heart rhythm disorder called long QT syndrome (LQTS), researchers reported in today’s rapid access issue of Circulation: Journal of the American Heart Association.