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.

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

Patients checking into a top rated hospital have a 27 percent lower chance of mortality

Patients checking into a hospital rated in the top five percent in the country have, on average, a 27 percent lower chance of mortality and a 14 percent lower risk of complications, according to a study released today by HealthGrades, the leading independent healthcare ratings company.

7 Feb 2006

$Warfarin increases risk of bone fracture$

Warfarin increases risk of bone fracture

Elderly patients taking the commonly prescribed blood thinner warfarin experience an increased risk for osteoporosis-linked bone fractures, according to a study at Washington University School of Medicine in St. Louis.

23 Jan 2006

Post cardiac surgery heart irregularities reduced by medication

Use of the medication amiodarone is associated with one-half the incidence of atrial tachyarrhythmias (rapid, abnormal heart beat) following cardiac surgery, according to a study in the December 28 issue of JAMA.

28 Dec 2005

Carvedilol, a cardiovascular drug, may improve heart failure and help prevent sudden death

Research shows that Carvedilol, a cardiovascular drug, could be useful in reducing cardiac death in high risk patients with prior myocardial infarction and/or heart failure and also in reducing the incidence and/or preventing the occurrence of atrial fibrillation in a number of clinical situations.

2 Dec 2005

Carvedilol may improve heart failure and help prevent sudden death

16 Nov 2005

Significant step forward in the genome era

In what promises to be a significant step forward in the genome era, the National Human Genome Research Institute (NHGRI) today announced plans to devote a portion of its large-scale sequencing capacity to efforts aimed at identifying the genetic roots of specific diseases that have long eluded gene hunters.

17 Oct 2005

Still a long way to go in diagnostic evaluation of all patients who suffer ischemic strokes

Women who survive a stroke are less likely than men to get crucial tests of their heart and neck arteries that can help improve their treatment and reduce their risk of a second stroke, a new University of Michigan study finds.

27 Sep 2005

Innovative new treatment for moderate to severe heart failure

Cardiologists at Beth Israel Medical Center are currently enrolling patients in an investigational study that is looking at the safety and efficacy of an innovative new treatment for moderate to severe heart failure, in which a unique pacemaker-like device helps strengthen the heart's pumping power

26 Sep 2005

Heavy alcohol consumption can significantly increase men's risk of developing atrial fibrillation

A large-scale study led by researchers at Beth Israel Deaconess Medical Center (BIDMC) has found that heavy alcohol consumption - 35 or more drinks per week -- can significantly increase men's risk of developing atrial fibrillation, a dangerous type of arrhythmia and one of the leading risk factors for stroke.

20 Sep 2005