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.
The worm C. elegans seems an unlikely candidate for studies related to cardiac arrhythmias. After all, the microscopic organism doesn't even have a heart.
The researchers studied 8 Sydney rock oysters, concentrating on the levels of omega-3 fatty acids in the gills, muscles and gonads.
Painless heart attacks or heart conditions can be commonly overlooked and undertreated at the hospital, often resulting in greater fatality rates than painful episodes.
Neurosurgeons at Rush University Medical Center are the first in Chicago to implant a new investigational neurostimulator in a patient with medically refractory epilepsy.
In animal and laboratory studies, scientists at Johns Hopkins have shown that modern, implanted heart assist devices - such as pacemakers and defibrillators - can be safe for use in magnetic resonance imaging (MRI) machines
People who suffer from chronic diseases, including high blood pressure, diabetes, asthma and heart problems should benefit from a new remote, home care monitoring system that could also bring an end to overcrowded waiting rooms.
A U.S. clinical study is just getting under way that, if successful, could lead to a non-surgical "cure" for the most common type of cardiac arrhythmia. The study is evaluating a new type of cryogenic catheter co-developed by the National Institute of Standards and Technology.
Their findings - published in the latest edition of Circulation Research, online July 8 - may lead to a gene therapy alternative to calcium channel blockers and their sometimes severe side effects, but also further interest in the development of gene therapies unique - as in this case - to one particular organ.
A potent chemotherapy that is highly effective in treating the most common form of childhood leukemia can significantly harm the heart, but findings from a multi-center study
Fatal heart attacks claims more lives than lung cancer, breast cancer and AIDS combined but it seems that maths, not medicine, holds the key to preventing these deaths among young people.
Long-chain omega-3 polyunsaturated fatty acids (n-3 LC-PUFAs) have benefits regarding cardiovascular and inflammatory function, certain types of cancer, and maternal and infant health, according to recent peer-reviewed studies.
Innovative research by UTS engineers to apply microwave energy to the treatment of potentially deadly heart rhythm disorders has received an important boost from the National Health and Medical Research Council (NHMRC).
Cancer treatments, including the most commonly used chemotherapy agents as well as the newest biologic and targeted therapy drugs, can harm a patient’s heart, sometimes fatally
Thoracic surgeon Daniel Bethencourt, MD, one of the few cardiac surgeons to cure atrial fibrillation (rapid, irregular heartbeat) without opening the patient's chest, will perform endoscopic microwave ablation to treat atrial fibrillation in a 59-year-old man
Lower rates of sudden death among women may be related to gender differences in heart arrhythmias, rather than to other heart disease factors or treatments, hypertension, diabetes or other measured variables, according to a new study in the June 16, 2004 issue of the Journal of the American College of Cardiology.
In response to reports that women may be using an unapproved drug, domperidone, to increase milk production (lactation), the Food and Drug Administration (FDA) is warning breastfeeding women not to use this product because of safety concerns. Today, FDA also issued six letters to pharmacies that compound products containing domperidone and firms that supply domperidone for use in compounding.
Journal of the American Heart Association reports that exposure to air pollution can contribute to the development of cardiovascular diseases.
A Florida businessman filed suit today against Atkins Nutritionals, Inc., and the Estate of Dr. Robert C. Atkins, claiming that the late diet author’s controversial high-fat, low-carbohydrate regimen caused severe heart disease, necessitating angioplasty and a stent. He is seeking a court injunction banning Atkins Nutritionals from marketing its products without a warning of potential health risks and asks for compensatory damages.
Doctors prescribed different medications to control the cardiac arrhythmia, or abnormal heartbeat. But the medications slowed his heart rate too much, at times to as low as 40 beats per minute.
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.