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.

Helicobacter pylori may be linked to atrial fibrillation

A common stomach bug may also be linked to the development of irregular heart rhythm, also known as atrial fibrillation, suggests a small study in Heart

15 Jun 2005

Acute coronary syndrome patients at increased risk of stroke

Patients hospitalized with chest pain or heart attack symptoms are at an increased risk of stroke even after being discharged, according to a study published in Circulation: Journal of the American Heart Association.

15 Jun 2005

Medicare's investment in quality improvement may not be paying off

Medicare's quality improvement organizations are charged with improving the medical care of Medicare beneficiaries.

14 Jun 2005

Atrial fibrillation may soon have an effective treatment

In laboratory tests in dogs, cardiac researchers at Washington University School of Medicine in St. Louis have found that treatment with anti-inflammatory drugs after heart surgery may lessen or prevent atrial fibrillation. They report their findings in the June 7 issue of Circulation.

8 Jun 2005

High-tech imaging software locates more accurately the abnormal electrical impulses that produce heart arrhythmias

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.

3 Jun 2005

Patients at high risk of stroke may need to continue Warfarin therapy after heart rhythm is controlled

Treatment with warfarin, a medication that prevents blood clotting, may reduce the risk of stroke by more than two-thirds in patients with atrial fibrillation (AF), a condition which places them at high risk of stroke, according to a study in the May 23 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.

23 May 2005

UK study links heart conditions with common ‘hidden’ hormone disorders in the elderly

A study of nearly 6000 elderly people in Birmingham has shown that ‘hidden’ thyroid disorders are common in over-65s and that there is a strong link between one type of abnormality and irregular heartbeat. The work will be presented at the British Endocrine Societies 2005 meeting in Harrogate on Wednesday.

5 Apr 2005

Aspirin safer than Warfarin for treating blocked arteries

National Institute of Neurological Disorders and Stroke (NINDS), part of the National Institutes of Health (NIH), have shown for the first time that aspirin works as well as warfarin in reducing blood clotting. Until now doctors have lacked good evidence for choosing one therapy over the other.

30 Mar 2005

NICE promotes use of dual-chamber pacemakers for treating bradycardia

In new medical guidance for England and Wales published today, the National Institute for Clinical Excellence (NICE) promotes the expanded use of dual-chamber pacemakers for treating slow heart rhythms, called bradycardia, which affect an estimated 100,000 people in the UK.

23 Feb 2005

Ximelagatran effective for preventing blood clots and stroke

A medication that could simplify anticoagulation therapy, ximelagatran, was found to be as effective as other common therapies for preventing stroke and recurrent blood clots

9 Feb 2005

Catheter ablation to treat supraventricular tachycardia (SVT) is not detrimental to patients

This data refutes previous evidence which suggested a high incidence of injury to a patient's cardiac nerves, possibly resulting in accelerated heart rates following the procedure.

31 Jan 2005

Genetic defect leads to electrical instability and mechanical pump failure

In genetic mapping of a large family with several members affected by a type of heart failure called dilated cardiomyopathy (DCM), the Mayo Clinic team found a defect in a gene on chromosome 3 called SCN5A.

26 Jan 2005

Catheter ablation safe for patients

A recent study published in Pacing and Clinical Electrophysiology (PACE) determined that the use of catheter ablation to treat supraventricular tachycardia (SVT) is not detrimental to patients.

19 Jan 2005

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