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.

Plavix appears to be safe during and after heart bypass

Heart surgeons don't have to choose between taking a coronary-bypass patient off the popular anti-clotting drug clopidogrel (Plavix) after off-pump heart bypass surgery or having the patient bleed excessively in the days following surgery, according to a new study by researchers at Jefferson Medical College.

28 Mar 2007

Irregular heartbeat linked to genetic mutation

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.

25 Feb 2007

Elderly atrial fibrillation patients lack adequate application of current management guidelines

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.

5 Sep 2006

Older patients with atrial fibrillation have higher rates of major hemorrhage in the brain

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.

3 Aug 2006

Guidelines on atrial fibrillation recommend new approach

Risk factors for stroke should be used to determine whether anti-clotting therapy is given to people with an irregular heartbeat called atrial fibrillation (AF), according to revised Guidelines for the Management of Patients with Atrial Fibrillation.

2 Aug 2006

Likelihood of hemorrhage on warfarin is relatively small

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.

2 Aug 2006

Study shows heart drug digitalis safe in patients with diastolic heart failure

Despite a widely held belief that the heart drug digitalis shouldn't be given to patients with diastolic heart failure, a new analysis shows it is relatively safe.

26 Jul 2006

Healthy habits and appropriate treatments help prevent stroke

Stroke is the third leading cause of death and a major source of disability in the United States. Every year about 700,000 people in the United States suffer a stroke, resulting in nearly 158,000 deaths.

10 May 2006

Corticosteroids may be linked to an increased risk for atrial fibrillation

High doses of medications known as corticosteroids may be linked to an increased risk for atrial fibrillation, a heart rhythm disorder characterized by an irregular heartbeat, according to an article in the May 8 issue of Archives of Internal Medicine.

9 May 2006

Osteoporosis drug Raloxifene shown to be as effective as Tamoxifen in preventing invasive breast cancer

Initial results of the Study of Tamoxifen and Raloxifene, or STAR, show that the drug raloxifene, currently used to prevent and treat osteoporosis in postmenopausal women, works as well as tamoxifen in reducing breast cancer risk for postmenopausal women at increased risk of the disease.

18 Apr 2006

Study is the first to show that stature influences atrial fibrillation risk

Analysis of data from a registry of patients with left ventricular dysfunction indicates that height is an independent risk factor for an arrhythmia of the upper chambers of the heart, according to a new study in the April 18, 2006, issue of the Journal of the American College of Cardiology.

17 Apr 2006

Statins may be able to play a role in preventing or slowing heart valve disease

Research to be published in the April 18 issue of the Journal of the American College of Cardiology provides the first explanation of an active rather than passive process that leads to heart valve degeneration, furthering a Northwestern researcher's effort to lead a paradigm shift in the medical community's beliefs about the cause of valve disease.

11 Apr 2006

Robotic device appears to be more precise than conventional catheter ablation devices for atrial fibrillation

A remotely-controlled catheter device guided by magnetic fields provides a safe and practical method for delivering radio frequency ablation treatment in the hearts of patients with atrial fibrillation, according to a new study in the April 4, 2006, issue of the Journal of the American College of Cardiology.

4 Apr 2006

Three-dimensional ultrasound probes poised to advance minimally invasive surgery

Three-dimensional ultrasound probes built by researchers at Duke's Pratt School of Engineering have imaged the beating hearts of dogs. The engineers said their demonstration showed that the probes could give surgeons a better view during human endoscopic surgeries in which operations are performed through tiny "keyhole" incisions.

4 Apr 2006

New procedure for treating esophageal perforations

A new procedure can now treat esophageal perforations (holes in the esophagus) when caught early, therefore greatly reducing mortality rates.

15 Mar 2006

New non-surgical procedure can cure irregular heart rhythm

A new procedure can now treat esophageal perforations (holes in the esophagus) when caught early, therefore greatly reducing mortality rates.

13 Mar 2006

Catheter ablation for chronic atrial fibrillation improves quality of life

People who have endured the effects and risks of an irregular heartbeat for years can get long-lasting relief from a procedure that takes less than two hours, a definitive new study shows.

7 Mar 2006

Overactive thyroid gland linked to increased risk for atrial fibrillation

Having an overactive thyroid gland is linked with an increased risk for atrial fibrillation (a type of abnormal heart rhythm), but neither an over- or under active thyroid gland is associated with a higher risk for other cardiovascular problems or increased risk of death

1 Mar 2006

Study questions whether treatment is necessary for mild thyroid problems

Researchers at the University of Pennsylvania School of Medicine have found that leaving a mildly underactive thyroid gland (subclinical hypothyroidism) untreated does not lead to increased cardiovascular risk.

1 Mar 2006

Telemetry captures stroke patients' cardiac problems

To detect "silent" or new cardiac abnormalities, all patients hospitalized for stroke should receive continuous cardiac rhythm monitoring (telemetry) for at least the first 24 hours after the stroke is detected, according to a Loyola University Health System study presented at the American Stroke Association's International Stroke Conference 2006.

24 Feb 2006