Atrial Fibrillation

First evidence for painless atrial fibrillation treatment

The first evidence for a shockless treatment for atrial fibrillation (AF) will be presented today at Frontiers in CardioVascular Biology (FCVB) 2014 in Barcelona, Spain. The meeting is organised by the Council on Basic Cardiovascular ...

Jul 04, 2014
popularity not rated yet | comments 0

New way to prevent some strokes discovered

Larry Ambrose was diagnosed as having a stroke a few days after he woke up one night, wandered into his kitchen and couldn't read the time on his microwave. Ambrose, like 25 percent of all stroke patients, ...

Jun 25, 2014
popularity 5 / 5 (4) | comments 0

Guidelines issued for stroke prevention in women

(HealthDay)—New guidelines have been released that highlight unique stroke risk factors for women and address prevention strategies, according to a synopsis article published in the June 17 issue of the ...

Jun 17, 2014
popularity not rated yet | comments 0

Atrial fibrillation (AF or A-fib) is the most common cardiac arrhythmia (irregular heart beat). It may cause no symptoms, but it is often associated with palpitations, fainting, chest pain, or congestive heart failure. AF increases the risk of stroke; the degree of stroke risk can be up to seven times that of the average population, depending on the presence of additional risk factors (such as high blood pressure). It may be identified clinically when taking a pulse, and the presence of AF can be confirmed with an electrocardiogram (ECG or EKG) which demonstrates the absence of P waves together with an irregular ventricular rate.

In AF, the normal regular electrical impulses generated by the sinoatrial node are overwhelmed by disorganized electrical impulses usually originating in the roots of the pulmonary veins, leading to irregular conduction of impulses to the ventricles which generate the heartbeat. AF may occur in episodes lasting from minutes to days ("paroxysmal"), or be permanent in nature. A number of medical conditions increases the risk of AF, particularly mitral stenosis (narrowing of the mitral valve of the heart).

Atrial fibrillation may be treated with medications to either slow the heart rate to a normal range ("rate control") or revert the heart rhythm back to normal ("rhythm control"). Synchronized electrical cardioversion can be used to convert AF to a normal heart rhythm. Surgical and catheter-based therapies may be used to prevent recurrence of AF in certain individuals. People with AF often take anticoagulants such as warfarin to protect them from stroke, depending on the calculated risk. The prevalence of AF in a population increases with age, with 8% of people over 80 having AF. Chronic AF leads to a small increase in the risk of death. A third of all strokes are caused by AF.

This text uses material from Wikipedia licensed under CC BY-SA

Latest Spotlight News

New device detects deadly lung disease

A scientist from the University of Exeter has developed a simple, cheap and highly accurate device for diagnosing a frequently fatal lung disease which attacks immune deficient individuals such as cancer ...

Monitoring pulse after stroke may prevent a second stroke

New research suggests that regularly monitoring your pulse after a stroke or the pulse of a loved one who has experienced a stroke may be a simple and effective first step in detecting irregular heartbeat, a major cause of ...

Three-people IVF debate process on the move in UK

Takes two to make a child, correct? No. maybe. The use of sperm and eggs from three people to create babies moved a step closer in the UK, with Tuesday's events. What kind of egg-sperm distribution are we talking about? The ...

Strategy proposed for preventing diseases of aging

Medicine focuses almost entirely on fighting chronic diseases in a piecemeal fashion as symptoms develop. Instead, more efforts should be directed to promoting interventions that have the potential to prevent ...

Study links enzyme to autistic behaviors

Fragile X syndrome (FXS) is a genetic disorder that causes obsessive-compulsive and repetitive behaviors, and other behaviors on the autistic spectrum, as well as cognitive deficits. It is the most common ...

Genetics of cancer: Non-coding DNA can finally be decoded

Cancer is a disease of the genome resulting from a combination of genetic modifications (or mutations). We inherit from our parents strong or weak predispositions to developing certain kinds of cancer; in addition, we also ...

Targeting the brain to treat obesity

Unlocking the secrets to better treating the pernicious disorders of obesity and dementia reside in the brain, according to a paper from American University's Center for Behavioral Neuroscience. In the paper, researchers ...