Heart Atrial Fibrillation
Atrial fibrillation (AF) is a particular type of heartbeat (arrhythmia) characterized by an extremely fast irregular rhythm.
When at rest, the healthy heartbeats between 60 and 90 times a minute, with the atria (the two upper chambers of the heart) beating slightly earlier than the ventricles (the two lower chambers of the heart). The rate and timing of contractions (beats) are regulated by electrical impulses generated by the sinoatrial node (a specialized group of cells that produce small...
More information on "Heart Atrial Fibrillation"
From Our Experts
Questions on Atrial Fibrillation and Heart Rates
Q: My brother has atrial fibrillation problems. Is there anything that he eats that can cause his heart to act up or certain foods he... Read more »
Atrial Fibrillation: America's Most Common Abnormal Heart Rhythm
The first thing I noticed about atrial fibrillation had nothing to do with my heart or chest. The first thing I noticed was that my lips... Read more »
Fosamax and Atrial Fibrillation Concerns
Reader's Question: I was diagnosed with osteopenia. My doctor advised me to start taking Fosamax. My mother has atrial fibrillation. ... Read more »
Electric Shock for Atrial Fibrillation: Is it Dangerous?
“You want to do what?” she asked. “Because you have Atrial Fibrillation, I’d like to schedule you for an electrical... Read more »
I have Atrial Fibrillation: Will I be on Coumadin® Forever?
People who suffer with Atrial Fibrillation ask this question very, very frequently. It is a common worry. Why? A couple reasons seem... Read more »
From Our Sources
Atrial fibrillation/flutter
Source: ADAM Encyclopedia
Atrial fibrillation/flutter is a common type of abnormal heartbeat in which the heart rhythm is fast and irregular. Alternative Names ... Read more »
Stroke Information
Source: ADAM Encyclopedia
A stroke is the sudden death of brain cells due to lack of oxygen. A stroke is usually defined as one of two types:Ischemic (caused by a blockage in... Read more »
What Is A Stroke?
Source: ADAM Encyclopedia
Signs of StrokeThe American Stroke Association advises everyone to learn to recognize these signs of stroke:Sudden numbness or weakness of the face,... Read more »
Atrial septal defect
Source: ADAM Encyclopedia
Atrial septal defect (ASD) is a congenital heart defect in which the wall that separates the upper heart chambers (atria) does not close completely.... Read more »
Atrial myxoma
Source: ADAM Encyclopedia
An atrial myxoma is a noncancerous tumor in the upper left or right side of the heart. It grows on the wall (atrial septum) that separates the two... Read more »
Common Misconceptions About Atrial Fibrillation
"If I can't feel it, I don't have it" Manish Assar, MD, a cardiac electrophysiologist on the medical staff at Baylor Jack and Jane Hamilton Heart and Vascular Hospital, says the above statement one of the most frequent misconceptions he...
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