Atrial Fibrillation News and Research

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Atrial fibrillation (AF) is the most common arrhythmia. An arrhythmia is a problem with the speed or rhythm of the heartbeat. A disorder in the heart’s electrical system causes AF and other types of arrhythmia. AF occurs when rapid, disorganized electrical signals in the heart’s two upper chambers, called the atria, cause them to contract very fast and irregularly (this is called fibrillation). As a result, blood pools in the atria and isn’t pumped completely into the heart’s two lower chambers, called the ventricles. When this happens, the heart’s upper and lower chambers don’t work together as they should. Often, people who have AF may not even feel symptoms. However, even when not noticed, AF can lead to an increased risk of stroke. In many patients, particularly when the rhythm is extremely rapid, AF can cause chest pain, heart attack, or heart failure. AF may occur rarely or every now and then, or it may become a persistent or permanent heart rhythm lasting for years.

3 or more alcoholic drinks increases risk of ischemic stroke by 45%

A new study led by researchers at Beth Israel Deaconess Medical Center (BIDMC) and the Harvard School of Public Health (HSPH) has found that heavy drinkers -- men who consume an average of three or more alcoholic beverages per day -- are nearly 45 percent more likely to suffer an ischemic stroke compared with nondrinkers.

4 Jan 2005

Obesity could increase a person’s risk for atrial fibrillation

New research indicates that being obese could increase a person’s risk for atrial fibrillation, the most common irregular heart rhythm, by 50 percent, according to work published in the November 24 issue of JAMA.

24 Nov 2004

Evidence for a link between alcohol consumption and heart flutter is conflicting

Alcohol consumption may slightly increase the risk for developing a certain type of irregular heart beat, known as atrial fibrillation, or atrial flutter, according to an article in the October 11 issue of The Archives of Internal Medicine.

11 Oct 2004

Research continues to show the cardiovascular benefits of fish consumption or omega-3 fatty acids

USA-Peer-reviewed research continues to show the cardiovascular benefits of fish consumption or intake of long-chain omega-3 polyunsaturated fatty acids (n-3 LC-PUFAs).

5 Oct 2004

Patients who experience medical or neurological complications following stroke are at a greater risk of dying in the hospital

Patients who experience medical or neurological complications following stroke, such as pneumonia or brain swelling, are at a greater risk of dying in the hospital, according to an article in the September 13 issue of The Archives Internal Medicine, one of the JAMA/Archives journals.

12 Sep 2004

Postmenopausal women with heart disease have three fold increased risk of heart failure if they also have diabetes

In addition, diabetic women in the study who also had kidney disease or obesity, or whose diabetes was poorly controlled (fasting blood sugar levels above 300 mg/dL) had a risk of heart failure 6-10 times higher than that of women without diabetes.

7 Sep 2004

Dronedarone is effective and well-tolerated in the prevention of atrial fibrillation

New anti-arrhythmic agent, dronedarone, is highly effective in the prevention of atrial fibrillation or atrial flutter recurrence, serious disorders of cardiac rhythm, and is well-tolerated by patients.

29 Aug 2004

Atrial fibrillation patients often receive needless treatment

Results of the Euro Heart Survey on atrial fibrillation (AF), demonstrate that many AF patients receive clot-preventing drugs while not at risk for stroke.

29 Aug 2004

Catheter delivered devices may be just as effective as drug therapy in treating strokes of unidentified origin

A percutaneous catheter procedure to correct a heart abnormality caused by an open patent foramen ovale (PFO), a flap that should be closed in an adult heart, may be just as effective as drug therapy in treating patients who have had strokes of unidentified origin, perhaps caused by this condition.

18 Aug 2004

A quarter of all adults aged over 40 could develop an irregular heartbeat

Atrial fibrillation is the most common heart rhythm disorder in the U.S., affecting more than 2 million adults. The prevalence of the condition is rising and scientists predict that about 5.6 million Americans will have the disorder by 2050. Known causes of AF include abnormalities in the heart’s structure and long-term uncontrolled high blood pressure.

17 Aug 2004

Thyroid expert concerned about recently approved generic levothyroxine preparations

Levothyroxine is taken by more than 13 million Americans to treat an underactive thyroid, thyroid gland enlargement, nodules, or cancer. In June, the Food and Drug Administration (FDA) ruled that several generic levothyroxine preparations had the same clinical effect and safety profile as certain branded products.

11 Aug 2004

Pacemakers and defibrillators can be safe for use in magnetic resonance imaging machines

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

3 Aug 2004

Tinned tuna lowers the risk of an irregular hearbeat

A new study out today suggests that tuna or broiled/baked fish lowers the risk of an irregular hearbeat among elderly people.

19 Jul 2004

New type of cryogenic catheter

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.

16 Jul 2004

First successful gene therapy that mimics the action of calcium channel blockers

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.

10 Jul 2004

New heart surgery without opening chest

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

29 Jun 2004

Better stroke care could save thousands of lives every year

An eight-month study at 21 Canadian hospitals, led by a Canadian Stroke Network and Heart and Stroke Foundation researcher, found that the majority of patients did not receive care on an acute stroke unit.

25 Jun 2004

Atrial fibrillation may be hereditary

Having a parent with atrial fibrillation (AF) strongly increased an offspring’s risk of developing this heart rhythm disorder, according to a study of participants in the National Heart, Lung, and Blood Institute’s (NHLBI) Framingham Heart Study.

15 Jun 2004

New medical device indentifies abnormal heart rhythms called atrial fibrillation

A new device identified abnormal heart rhythms called atrial fibrillation in one of 18 stroke patients in whom two standard tests failed to detect the irregularity, researchers report in today’s rapid access issue of Stroke: Journal of the American Heart Association.

20 May 2004

Anti-clotting treatment underused at many hospitals

Academic hospitals are more likely than community or Veteran’s Administration (VA) hospitals to follow national guidelines for treating patients at risk for blood clots with aspirin or warfarin.

19 May 2004