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.
German researchers say the newer wire leads now used in implantable cardioverter defibrillators (ICDs) are not as reliable as first thought.
The anti-anginal medication ranolazine was shown to be safe in regard to certain outcomes but did not reduce the risk of major cardiovascular events such as death, heart attack or recurrent ischemia following acute coronary syndromes, according to a study in the April 25 issue of JAMA .
The anti-anginal medication ranolazine was shown to be safe in regard to certain outcomes but did not reduce the risk of major cardiovascular events such as death, heart attack or recurrent ischemia following acute coronary syndromes, according to a study in the April 25 issue of JAMA.
Patients who receive corticosteroids after cardiac surgery have a significantly lower risk of atrial fibrillation in the days following the surgery, according to a study in the April 11 issue of JAMA.
While magnetic resonance imaging (MRI) is already well established as a premiere non-invasive imaging technology, patients with implantable pacemakers, implantable cardiac devices, neurostimulators and other medical devices are often denied the evaluation their medical situation urgently requires.
Scientists have known for nearly a decade that African Americans have higher rates of hospitalization for heart failure than other major U.S. racial or ethnic groups, but until now they have had limited information other than socio-economic and demographic characteristics to explain why this is so.
Every day for 10 years, a seemingly heart-healthy 53-year-old woman experienced rapid and irregular heartbeats. She had no personal or family history of hypertension or hyperthyroidism. She did not suffer from myocardial or coronary artery disease, or any abnormalities of the heart as best doctors and medical science could determine.
The trial provides the first prospective clinical evidence that aortic valves have an active biology that can be targeted with medical therapy and contradicts research published in 2005 in the New England Journal of Medicine, which concluded statins did not halt the progression of aortic stenosis.
Cases of congenital heart disease (CHD), in both adolescents and adults, have been on the rise for many years.
Some high-level athletes who take part in endurance sports can develop a rare but life-threatening condition called ventricular arrhythmia (VA) in which the heart beats at an abnormal rate and rhythm.
Boston Scientific Corporation has announced that results of the largest implantable cardioverter defibrillator (ICD) study to date, known as INTRINSIC RV, were published in the January issue of the journal Circulation.
Across the world, emergency medical teams often administer a powerful clot-busting drug called tissue plasminogen activator (t-PA) to help patients stricken by heart attack.
The mystery behind a commonly untreatable and undetected heart muscle disease in children is partially revealed for the first time in today's edition of the scientific journal JAMA.
Researchers at Virginia Commonwealth University Medical Center have developed and patented a new, noninvasive means of measuring blood pressure inside the heart.
Two major studies by experts in the U.S. and Australia have provided new evidence of the cardiovascular and kidney risks attached to both COX-2 inhibitors and NSAID painkillers.
World Congress of Cardiology Report - Although elderly AF patients are at much higher risk for stroke, they are undertreated for stroke prophylaxis compared to younger patients.
World Congress of Cardiology Report - Familial genetic defects are responsible for several cases of unexpected sudden cardiac death in young and otherwise healthy individuals.
The FDA frequently issues safety advisories for automated external defibrillators and accessories, although the number of actual device malfunctions appears to be relatively small.
A new way of delivering corrective genes with a single injection into a vein holds promise for long-lasting treatments of hereditary diseases of the heart, University of Florida researchers report.
Older patients with atrial fibrillation have higher rates of major hemorrhage in the brain whether or not they are using a common blood thinning therapy, according to a new study.